Donald E. Schroeder Jr.

Person

Littleton, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of completing a well
- Patent number 6,253,851
- Issue date Jul 3, 2001
- Marathon Oil Company
- Donald E. Schroeder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of gravel packing a well
- Patent number 5,269,375
- Issue date Dec 14, 1993
- Donald E. Schroeder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and means for stabilizing gravel packs
- Patent number 5,127,474
- Issue date Jul 7, 1992
- Marathon Oil Company
- Donald E. Schroeder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of gravel packing a subterranean well
- Patent number 5,062,484
- Issue date Nov 5, 1991
- Marathon Oil Company
- Donald E. Schroeder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Staged screen assembly for gravel packing
- Patent number 4,932,474
- Issue date Jun 12, 1990
- Marathon Oil Company
- Donald E. Schroeder
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleu...
- Patent number 4,614,623
- Issue date Sep 30, 1986
- Marathon Oil Company
- Donald E. Schroeder
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleu...
- Patent number 4,560,517
- Issue date Dec 24, 1985
- Marathon Oil Company
- Donald E. Schroeder
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Apparatus and method for preparing polymers
- Patent number 4,464,509
- Issue date Aug 7, 1984
- Marathon Oil Company
- Donald E. Schroeder
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Sulfonation of crude oils to produce petroleum sulfonates
- Patent number 4,144,266
- Issue date Mar 13, 1979
- Marathon Oil Company
- Mark A. Plummer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Flooding with micellar dispersions containing petroleum sulfonates...
- Patent number 4,013,125
- Issue date Mar 22, 1977
- Marathon Oil Company
- Mark A. Plummer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for oil recovery by flooding with micellar dispersions conta...
- Patent number 3,964,548
- Issue date Jun 22, 1976
- Marathon Oil Company
- Donald E. Schroeder
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the production of petroleum sulfonate
- Patent number 3,956,372
- Issue date May 11, 1976
- Marathon Oil Company
- John R. Coleman
- C07 - ORGANIC CHEMISTRY

Donald E. Schroeder Jr.

Person

Patents Grantslast 30 patents

Method of completing a well

Method of gravel packing a well

Method and means for stabilizing gravel packs

Method of gravel packing a subterranean well

Staged screen assembly for gravel packing

Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleu...

Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleu...

Apparatus and method for preparing polymers

Sulfonation of crude oils to produce petroleum sulfonates

Flooding with micellar dispersions containing petroleum sulfonates...

Method for oil recovery by flooding with micellar dispersions conta...

Process for the production of petroleum sulfonate