Dewatering or demulsification of hydrocarbon oils

Industry

CPC
C10G33/00

This industry / category may be too specific. Please go to a parent level for more data

Industries

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatuses for mixing crude oil and water
- Patent number 12,227,701
- Issue date Feb 18, 2025
- Saudi Arabian Oil Company
- Ahmed Khurshid
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Smart dehysalter system
- Patent number 12,226,711
- Issue date Feb 18, 2025
- Saudi Arabian Oil Company
- Adel Abu-Rejailah
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Purification of waste plastic based oil via a two steps hydrotreatment
- Patent number 12,203,036
- Issue date Jan 21, 2025
- TOTALENERGIES ONETECH BELGIUM
- Cindy Adam
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Systems for modifying desalter alkalinity capacity and uses thereof
- Patent number 12,195,678
- Issue date Jan 14, 2025
- Phillips 66 Company
- Amit B. Patel
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Synergetic solvent for crude oil emulsion breakers
- Patent number 12,179,129
- Issue date Dec 31, 2024
- Saudi Arabian Oil Company
- Guillaume Robert Jean-Francois Raynel
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Methods of using ionic liquids as paraffin inhibitors, pour point d...
- Patent number 12,180,428
- Issue date Dec 31, 2024
- Baker Hughes Holdings, LLC
- Jerry Weers
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Composition and method for improved desalter brine quality
- Patent number 12,180,427
- Issue date Dec 31, 2024
- Javier Gonzalez
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Waste plastic based oil upgrading into high value chemicals via dir...
- Patent number 12,173,241
- Issue date Dec 24, 2024
- TOTALENERGIES ONETECH BELGIUM
- Cindy Adam
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Gas-oil separation plant virtual water cut predictor based on super...
- Patent number 12,175,380
- Issue date Dec 24, 2024
- Saudi Arabian Oil Company
- Abdullah Mohammed Alabdullatif
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Copolymers useful as water clarifiers and for water-oil separation
- Patent number 12,163,095
- Issue date Dec 10, 2024
- Baker Hughes Oilfield Operations LLC
- Wojciech Jakubowski
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method and system for producing refined hydrocarbons from waste pla...
- Patent number 12,139,676
- Issue date Nov 12, 2024
- SK Innovation Co., Ltd.
- Yong Woon Kim
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Systems and methods for crude oil desalting and dehydration in a ve...
- Patent number 12,134,739
- Issue date Nov 5, 2024
- VME Process, Inc.
- Terrance John Larry Trofimuk
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Emulsion detection in electrical separators
- Patent number 12,121,830
- Issue date Oct 22, 2024
- Cameron International Corporation
- Gary W. Sams
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Emulsion breaking
- Patent number 12,116,535
- Issue date Oct 15, 2024
- Saudi Arabian Oil Company
- Nagoorpitchai S. Meeranpillai
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Assembly for removal of water from oil
- Patent number 12,109,508
- Issue date Oct 8, 2024
- C.C JENSEN A/S
- Jens Christian Fich
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for creating crude oil synthesized fluid having surfactant a...
- Patent number 12,104,126
- Issue date Oct 1, 2024
- The Texas A&M University System
- Jamie Kraus
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Mixtures for improving or boosting the separation of water from fuels
- Patent number 12,091,618
- Issue date Sep 17, 2024
- BASF SE
- Matthias Zorn
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Power supply unit, system and method for electrical coalescence of...
- Patent number 12,095,376
- Issue date Sep 17, 2024
- Cameron International Corporation
- Pavan Kumar B. Mandewalkar
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Determining demulsifier performance
- Patent number 12,072,346
- Issue date Aug 27, 2024
- Saudi Arabian Oil Company
- Nagoorpitchai S. Meeranpillai
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Recycling gaseous hydrocarbons
- Patent number 12,065,619
- Issue date Aug 20, 2024
- Energy & Environmental Research Center Foundation
- Darren Schmidt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Polymer-metal salt composite for the dehydration of water from swee...
- Patent number 12,054,678
- Issue date Aug 6, 2024
- Saudi Arabian Oil Company
- Youcef Mankour
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Utilizing hydraulic simulation to evaluate quality of water in salt...
- Patent number 12,051,486
- Issue date Jul 30, 2024
- Saudi Arabian Oil Company
- Zaid A. Binhaji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Natural material for separating oil-in-water emulsions
- Patent number 12,049,594
- Issue date Jul 30, 2024
- Saudi Arabian Oil Company
- Nagoorpitchai S. Meeranpillai
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process control systems and methods for simultaneous crude oil dehy...
- Patent number 12,037,550
- Issue date Jul 16, 2024
- Saudi Arabian Oil Company
- Mohamed Soliman
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method and system for purification of oil
- Patent number 12,023,604
- Issue date Jul 2, 2024
- SKF MFR Technology AB
- Thomas Persson
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Janus membranes via atomic layer deposition
- Patent number 12,012,559
- Issue date Jun 18, 2024
- UChicago Argonne, LLC
- Ruben Waldman
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Aggregate processing systems, methods and apparatus
- Patent number 11,992,821
- Issue date May 28, 2024
- Superior Industries, Inc.
- Matt Esson
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Coalescing filter element and filter assembly therefore
- Patent number 11,992,792
- Issue date May 28, 2024
- Schroeder Industries, LLC.
- Chris Bortnik
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Methods of designing green demulsifiers
- Patent number 11,981,871
- Issue date May 14, 2024
- Baker Hughes Oilfield Operations LLC
- Kekeli A. Ekoue-Kovi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Simultaneous crude oil dehydration, desalting, sweetening, and stab...
- Patent number 11,952,542
- Issue date Apr 9, 2024
- Saudi Arabian Oil Company
- Mohamed Soliman
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PROTECTING COALESCER ELEMENTS OF AN ELECTROSTATIC COALES...
- Publication number 20250058331
- Publication date Feb 20, 2025
- SULZER MANAGEMENT AG
- Per FRANSSON
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Application
RANDOM ACRYLIC TERPOLYMERS OF CONTROLLED MOLECULAR MASS EMPLOYED IN...
- Publication number 20250051654
- Publication date Feb 13, 2025
- INSTITUTO MEXICANO DEL PETROLEO
- César Andrés Flores Sandoval
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
FUEL OIL RECLAMATION
- Publication number 20250043200
- Publication date Feb 6, 2025
- SULNOX GROUP PLC
- James REDMAN
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
EMULSION DETECTION IN ELECTRICAL SEPARATORS
- Publication number 20250041763
- Publication date Feb 6, 2025
- Cameron International Corporation
- Gary W. Sams
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CONTROLLED TURBOCHARGER IN GAS-OIL SEPARATION PLANT INLET MANIFOLD
- Publication number 20250026988
- Publication date Jan 23, 2025
- Saudi Arabian Oil Company
- Abdullah S. ALHUSSAIN
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
PROCESS AND SYSTEM FOR EXTRACTION OF AQUEOUS FLUIDS IN PETROLEUM PR...
- Publication number 20250026989
- Publication date Jan 23, 2025
- Petroleo Brasileiro S.A. - PETROBRAS
- ROSANE ALVES FONTES
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
METHOD FOR CREATING CRUDE OIL SYNTHESIZED FLUID HAVING SURFACTANT A...
- Publication number 20250019598
- Publication date Jan 16, 2025
- THE TEXAS A&M UNIVERSITY SYSTEM
- Jamie Kraus
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
EMULSION BREAKING
- Publication number 20250002794
- Publication date Jan 2, 2025
- Saudi Arabian Oil Company
- Nagoorpitchai S. Meeranpillai
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Real-Time Adaptive Control of Demulsifier Injection Using Self-Lear...
- Publication number 20240402659
- Publication date Dec 5, 2024
- Saudi Arabian Oil Company
- Ariffen Bin Adnan
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPOUNDS FOR BREAKING EMULSIONS
- Publication number 20240368483
- Publication date Nov 7, 2024
- Saudi Arabian Oil Company
- Manal Al-Eid
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
NATURAL MATERIAL FOR SEPARATING OIL-IN-WATER EMULSIONS
- Publication number 20240352343
- Publication date Oct 24, 2024
- Saudi Arabian Oil Company
- Nagoorpitchai S. Meeranpillai
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...
- Publication number 20240352359
- Publication date Oct 24, 2024
- SK INNOVATION CO., LTD.
- Yong Woon KIM
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
METHOD AND SYSTEM FOR PRODUCING SYNGAS CONTAINING HYDROGEN FROM WAS...
- Publication number 20240351870
- Publication date Oct 24, 2024
- SK INNOVATION CO., LTD.
- Yong Woon KIM
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...
- Publication number 20240352342
- Publication date Oct 24, 2024
- SK INNOVATION CO., LTD.
- Yong Woon KIM
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...
- Publication number 20240352357
- Publication date Oct 24, 2024
- SK INNOVATION CO., LTD.
- Yong Woon KIM
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPACT PRESSURE ENERGY RECOVERY GAS OIL SEPARATION PLANT SYSTEMS A...
- Publication number 20240342630
- Publication date Oct 17, 2024
- Saudi Arabian Oil Company
- Samusideen Adewale SALU
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
HIGHLY RANDOM ADDITION BYPOLYMERS FOR DESTABILIZATION OF COMPLEX EM...
- Publication number 20240327725
- Publication date Oct 3, 2024
- INSTITUTO MEXICANO DEL PETROLEO
- Cesar Andres FLORES SANDOVAL
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
PROCESSING WATER FROM HYDROCARBON OPERATIONS
- Publication number 20240327726
- Publication date Oct 3, 2024
- Saudi Arabian Oil Company
- Ahmed S. AL-OTAIBI
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SEPARATOR AND ASSOCIATED METHODS FOR PROCESSING GEL, OIL AND WATER...
- Publication number 20240327724
- Publication date Oct 3, 2024
- PERM Inc.
- Mojtaba HASIRI
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
POLYMER-METAL SALT COMPOSITE FOR THE DEHYDRATION OF WATER FROM SWEE...
- Publication number 20240309277
- Publication date Sep 19, 2024
- Saudi Arabian Oil Company
- Youcef Mankour
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
OBTENTION OF RANDOM BIPOLYMERS BASED ON ACRYLICS WITH AMPHOTERIC FR...
- Publication number 20240294836
- Publication date Sep 5, 2024
- INSTITUTO MEXICANO DEL PETROLEO
- César Andrés Flores Sandoval
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
SMART DEHYSALTER SYSTEM
- Publication number 20240226773
- Publication date Jul 11, 2024
- Saudi Arabian Oil Company
- Adel Abu-Rejailah
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
GRAPHENE-BASED NANODEMULSIFIER
- Publication number 20240217827
- Publication date Jul 4, 2024
- YPF TECNOLOGÍA S.A.
- Nicolas Alberto GARCIA SAGGION
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHODS AND SYSTEMS FOR DEMULSIFICATION AND GENERATION OF PLASMA EN...
- Publication number 20240199962
- Publication date Jun 20, 2024
- David Wragg
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Remediation of Rag Layer and Other Disposable Layers in Oil Tanks a...
- Publication number 20240191146
- Publication date Jun 13, 2024
- Locus Solutions IPCo, LLC
- Sean FARMER
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPOSITIONS AND METHODS FOR BREAKING FOAMS AND EMULSIONS
- Publication number 20240182781
- Publication date Jun 6, 2024
- Chevron U.S.A. Inc.
- Gayani W. PINNAWALA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DEMULSIFICATION ENHANCER, PREPARATION METHOD AND APPLICATION THEREOF
- Publication number 20240166956
- Publication date May 23, 2024
- Zhihui Chang
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
NATURAL GAS REFINING UNIT FOR INTEGRATION AT A BATTERY SITE OF AN O...
- Publication number 20240158708
- Publication date May 16, 2024
- POLYVALOR, LIMITED PARTNERSHIP
- Gregory PATIENCE
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
DECOMPOSITION OF GAS FIELD CHEMICALS
- Publication number 20240124340
- Publication date Apr 18, 2024
- Saudi Arabian Oil Company
- Mohamed Ahmed Soliman
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
PROCESS FOR TREATING AGED OIL BY ELECTRON BEAM IRRADIATION
- Publication number 20240123372
- Publication date Apr 18, 2024
- YI LI
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Dewatering or demulsification of hydrocarbon oils

Industry

Parent Industries

Current Industry

Sub Industries

Patents Grantslast 30 patents

Methods and apparatuses for mixing crude oil and water

Smart dehysalter system

Purification of waste plastic based oil via a two steps hydrotreatment

Systems for modifying desalter alkalinity capacity and uses thereof

Synergetic solvent for crude oil emulsion breakers

Methods of using ionic liquids as paraffin inhibitors, pour point d...

Composition and method for improved desalter brine quality

Waste plastic based oil upgrading into high value chemicals via dir...

Gas-oil separation plant virtual water cut predictor based on super...

Copolymers useful as water clarifiers and for water-oil separation

Method and system for producing refined hydrocarbons from waste pla...

Systems and methods for crude oil desalting and dehydration in a ve...

Emulsion detection in electrical separators

Emulsion breaking

Assembly for removal of water from oil

Method for creating crude oil synthesized fluid having surfactant a...

Mixtures for improving or boosting the separation of water from fuels

Power supply unit, system and method for electrical coalescence of...

Determining demulsifier performance

Recycling gaseous hydrocarbons

Polymer-metal salt composite for the dehydration of water from swee...

Utilizing hydraulic simulation to evaluate quality of water in salt...

Natural material for separating oil-in-water emulsions

Process control systems and methods for simultaneous crude oil dehy...

Method and system for purification of oil

Janus membranes via atomic layer deposition

Aggregate processing systems, methods and apparatus

Coalescing filter element and filter assembly therefore

Methods of designing green demulsifiers

Simultaneous crude oil dehydration, desalting, sweetening, and stab...

Patents Applicationslast 30 patents

METHOD FOR PROTECTING COALESCER ELEMENTS OF AN ELECTROSTATIC COALES...

RANDOM ACRYLIC TERPOLYMERS OF CONTROLLED MOLECULAR MASS EMPLOYED IN...

FUEL OIL RECLAMATION

EMULSION DETECTION IN ELECTRICAL SEPARATORS

CONTROLLED TURBOCHARGER IN GAS-OIL SEPARATION PLANT INLET MANIFOLD

PROCESS AND SYSTEM FOR EXTRACTION OF AQUEOUS FLUIDS IN PETROLEUM PR...

METHOD FOR CREATING CRUDE OIL SYNTHESIZED FLUID HAVING SURFACTANT A...

EMULSION BREAKING

Real-Time Adaptive Control of Demulsifier Injection Using Self-Lear...

COMPOUNDS FOR BREAKING EMULSIONS

NATURAL MATERIAL FOR SEPARATING OIL-IN-WATER EMULSIONS

METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...

METHOD AND SYSTEM FOR PRODUCING SYNGAS CONTAINING HYDROGEN FROM WAS...

METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...

METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS FROM WASTE PLA...

COMPACT PRESSURE ENERGY RECOVERY GAS OIL SEPARATION PLANT SYSTEMS A...

HIGHLY RANDOM ADDITION BYPOLYMERS FOR DESTABILIZATION OF COMPLEX EM...

PROCESSING WATER FROM HYDROCARBON OPERATIONS

SEPARATOR AND ASSOCIATED METHODS FOR PROCESSING GEL, OIL AND WATER...

POLYMER-METAL SALT COMPOSITE FOR THE DEHYDRATION OF WATER FROM SWEE...

OBTENTION OF RANDOM BIPOLYMERS BASED ON ACRYLICS WITH AMPHOTERIC FR...

SMART DEHYSALTER SYSTEM

GRAPHENE-BASED NANODEMULSIFIER

METHODS AND SYSTEMS FOR DEMULSIFICATION AND GENERATION OF PLASMA EN...

Remediation of Rag Layer and Other Disposable Layers in Oil Tanks a...

COMPOSITIONS AND METHODS FOR BREAKING FOAMS AND EMULSIONS

DEMULSIFICATION ENHANCER, PREPARATION METHOD AND APPLICATION THEREOF

NATURAL GAS REFINING UNIT FOR INTEGRATION AT A BATTERY SITE OF AN O...

DECOMPOSITION OF GAS FIELD CHEMICALS

PROCESS FOR TREATING AGED OIL BY ELECTRON BEAM IRRADIATION