David H. Clemens

Person

Willow Grove, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of purifying condensate waters for steam regenerating equipment
- Patent number 4,886,606
- Issue date Dec 12, 1989
- Rohm & Haas Company
- David H. Clemens
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Preparation, polymerization, and use of new bis-vinylbenzyl nitroge...
- Patent number 4,248,797
- Issue date Feb 3, 1981
- Rohm & Haas Company
- Frank J. Glavis
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hybrid copolymers
- Patent number 4,152,496
- Issue date May 1, 1979
- Rohm & Haas Company
- James H. Barrett
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation, polymerization and use of new bis-vinylbenzyl nitrogen...
- Patent number 4,140,659
- Issue date Feb 20, 1979
- Rohm & Haas Company
- David H. Clemens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation, polymerization, and use of new bis-vinylbenzyl nitroge...
- Patent number 4,137,264
- Issue date Jan 30, 1979
- Rohm & Haas Company
- Frank L. Glavis
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Desalination process using thermally regenerable resins
- Patent number 4,087,357
- Issue date May 2, 1978
- Rohm & Haas Company
- James H. Barrett
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Ion exchange resins derived from hybrid copolymers
- Patent number 3,991,017
- Issue date Nov 9, 1976
- Rohm & Haas Company
- James H. Barrett
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of decolorizing sugar solutions with hybrid ion exchange resins
- Patent number 3,966,489
- Issue date Jun 29, 1976
- Rohm & Haas Company
- James Henry Barrett
- C13 - SUGAR INDUSTRY
Information Patent Grant
Method of preparing resins containing sulfonic acid functionality i...
- Patent number 3,944,507
- Issue date Mar 16, 1976
- Rohm & Haas Company
- David H. Clemens
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

David H. Clemens

Person

Patents Grantslast 30 patents

Method of purifying condensate waters for steam regenerating equipment

Preparation, polymerization, and use of new bis-vinylbenzyl nitroge...

Hybrid copolymers

Preparation, polymerization and use of new bis-vinylbenzyl nitrogen...

Preparation, polymerization, and use of new bis-vinylbenzyl nitroge...

Desalination process using thermally regenerable resins

Ion exchange resins derived from hybrid copolymers

Method of decolorizing sugar solutions with hybrid ion exchange resins

Method of preparing resins containing sulfonic acid functionality i...