Walter R. Harfmann

Person

Matthews, NC, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method for production of low density polyester foam and articles ma...
- Patent number 11,111,350
- Issue date Sep 7, 2021
- WRH TECHNOLOGY, LLC
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymeric foam sheet using ambient gas blowing agent via controlled...
- Patent number 6,827,888
- Issue date Dec 7, 2004
- Genpak LLC
- Walter R. Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing alkenyl aromatic foams having increased therm...
- Patent number 6,602,923
- Issue date Aug 5, 2003
- Reedy International Corporation
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polymer foam using a blowing agent combination
- Patent number 6,342,173
- Issue date Jan 29, 2002
- Genpak, L.L.C.
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
System for forming low-density polymer foam article
- Patent number 6,273,697
- Issue date Aug 14, 2001
- Genpak, L.L.C.
- Walter R. Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing alkenyl aromatic foams having increased therm...
- Patent number 6,258,863
- Issue date Jul 10, 2001
- Reedy International Corporation
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of recycling polyester foam
- Patent number 6,130,261
- Issue date Oct 10, 2000
- Genpak, L.L.C.
- Walter Rudolf Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for producing polymer foam using a blowing agent combination
- Patent number 6,063,316
- Issue date May 16, 2000
- Genpak, L.L.C.
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method and system for forming low-density polymer foam article
- Patent number 5,985,190
- Issue date Nov 16, 1999
- Genpak, L.L.C.
- Walter R. Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for producing polyester foam
- Patent number 5,681,865
- Issue date Oct 28, 1997
- Genpak Corporation
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for producing polyester foam using a blowing agent combination
- Patent number 5,679,295
- Issue date Oct 21, 1997
- Genpak Corporation
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Method for Production of Low Density Polyester Foam and Articles Ma...
- Publication number 20190127543
- Publication date May 2, 2019
- Walter R. HARFMANN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymeric foam sheet using ambient gas blowing agent via controlled...
- Publication number 20030138515
- Publication date Jul 24, 2003
- GENPAK LLC
- Walter R. Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Polymeric foam sheet using ambient gas blowing agent via controlled...
- Publication number 20020135088
- Publication date Sep 26, 2002
- Walter R. Harfmann
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Process for producing alkenyl aromatic foams having increased therm...
- Publication number 20010014702
- Publication date Aug 16, 2001
- Reedy International Corporation
- Walter R. Harfmann
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Walter R. Harfmann

Person

Patents Grantslast 30 patents

Method for production of low density polyester foam and articles ma...

Polymeric foam sheet using ambient gas blowing agent via controlled...

Process for producing alkenyl aromatic foams having increased therm...

Method for producing polymer foam using a blowing agent combination

System for forming low-density polymer foam article

Process for producing alkenyl aromatic foams having increased therm...

Method of recycling polyester foam

Method for producing polymer foam using a blowing agent combination

Method and system for forming low-density polymer foam article

Method for producing polyester foam

Method for producing polyester foam using a blowing agent combination

Patents Applicationslast 30 patents

Method for Production of Low Density Polyester Foam and Articles Ma...

Polymeric foam sheet using ambient gas blowing agent via controlled...

Polymeric foam sheet using ambient gas blowing agent via controlled...

Process for producing alkenyl aromatic foams having increased therm...