John J. Helstrom

Person

Naperville, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Open-bottomed cyclone with gas inlet tube and method
- Patent number 5,362,379
- Issue date Nov 8, 1994
- Amoco Corporation
- John J. Helstrom
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Open-bottomed cyclone with solids separation tube and method
- Patent number 5,279,727
- Issue date Jan 18, 1994
- Amoco Corporation
- John J. Helstrom
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Methods of tar sand bitumen recovery
- Patent number 5,143,598
- Issue date Sep 1, 1992
- Amoco Corporation
- Robert J. Graham
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method for solvent treating of tar sands with water displacement
- Patent number 4,722,782
- Issue date Feb 2, 1988
- Standard Oil Company
- Robert J. Graham
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Hydrocarbon conversion method
- Patent number 4,526,675
- Issue date Jul 2, 1985
- Standard Oil Company (Indiana)
- John A. Mahoney
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Solid hydrocarbon liquefaction with a catalyst having chromium and...
- Patent number 4,514,279
- Issue date Apr 30, 1985
- Standard Oil Company (Indiana)
- John A. Mahoney
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

John J. Helstrom

Person

Patents Grantslast 30 patents

Open-bottomed cyclone with gas inlet tube and method

Open-bottomed cyclone with solids separation tube and method

Methods of tar sand bitumen recovery

Method for solvent treating of tar sands with water displacement

Hydrocarbon conversion method

Solid hydrocarbon liquefaction with a catalyst having chromium and...