Helena L. Chum

Person

Arvada, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Pyrolysis and hydrolysis of mixed polymer waste comprising polyethy...
- Patent number 5,821,553
- Issue date Oct 13, 1998
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process to convert biomass and refuse derived fuel to ethers and/or...
- Patent number 5,504,259
- Issue date Apr 2, 1996
- Midwest Research Institute
- James P. Diebold
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Sequential pyrolysis of plastic to recover polystyrene HCL and tere...
- Patent number 5,464,602
- Issue date Nov 7, 1995
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Pyrolysis of polystyrene - polyphenylene oxide to recover styrene a...
- Patent number 5,386,070
- Issue date Jan 31, 1995
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Controlled catalytic and thermal sequential pyrolysis and hydrolysi...
- Patent number 5,359,099
- Issue date Oct 25, 1994
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Controlled catalytic and thermal sequential pyrolysis and hydrolysi...
- Patent number 5,359,061
- Issue date Oct 25, 1994
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Controlled catalystic and thermal sequential pyrolysis and hydrolys...
- Patent number 5,321,174
- Issue date Jun 14, 1994
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Controlled catalytic and thermal sequential pyrolysis and hydrolysi...
- Patent number 5,300,704
- Issue date Apr 5, 1994
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Resole resin products derived from fractionated organic and aqueous...
- Patent number 5,235,021
- Issue date Aug 10, 1993
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Phenolic compounds containing/neutral fractions extract and product...
- Patent number 5,223,601
- Issue date Jun 29, 1993
- Midwest Research Institute Ventures, Inc.
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Controlled catalytic and thermal sequential pyrolysis and hydrolysi...
- Patent number 5,216,149
- Issue date Jun 1, 1993
- Midwest Research Institute
- Robert J. Evans
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Controlled catalytic and thermal sequential pyrolysis and hydrolysi...
- Patent number 5,136,111
- Issue date Aug 4, 1992
- MRI Ventures, Inc.
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing phenolic formaldehyde resole resin products d...
- Patent number 5,091,499
- Issue date Feb 25, 1992
- Midwest Research Institute
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Supercritical separation process for complex organic mixtures
- Patent number 4,964,995
- Issue date Oct 23, 1990
- Midwest Research Institute
- Helena L. Chum
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for fractionating fast-pyrolysis oils, and products derived...
- Patent number 4,942,269
- Issue date Jul 17, 1990
- Midwest Research Institute
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing peracids from aliphatic hydroxy carboxylic acids
- Patent number 4,617,090
- Issue date Oct 14, 1986
- The United States of America as represented by the United States Department o...
- Helena L. Chum
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Separation of certain carboxylic acids utilizing cation exchange me...
- Patent number 4,476,025
- Issue date Oct 9, 1984
- The United States of America as represented by the United States Department o...
- Helena L. Chum
- C07 - ORGANIC CHEMISTRY

Helena L. Chum

Person

Patents Grantslast 30 patents

Pyrolysis and hydrolysis of mixed polymer waste comprising polyethy...

Process to convert biomass and refuse derived fuel to ethers and/or...

Sequential pyrolysis of plastic to recover polystyrene HCL and tere...

Pyrolysis of polystyrene - polyphenylene oxide to recover styrene a...

Controlled catalytic and thermal sequential pyrolysis and hydrolysi...

Controlled catalytic and thermal sequential pyrolysis and hydrolysi...

Controlled catalystic and thermal sequential pyrolysis and hydrolys...

Controlled catalytic and thermal sequential pyrolysis and hydrolysi...

Resole resin products derived from fractionated organic and aqueous...

Phenolic compounds containing/neutral fractions extract and product...

Controlled catalytic and thermal sequential pyrolysis and hydrolysi...

Controlled catalytic and thermal sequential pyrolysis and hydrolysi...

Process for preparing phenolic formaldehyde resole resin products d...

Supercritical separation process for complex organic mixtures

Process for fractionating fast-pyrolysis oils, and products derived...

Process for producing peracids from aliphatic hydroxy carboxylic acids

Separation of certain carboxylic acids utilizing cation exchange me...