Robert Smith-Johannsen

Person

Portola Valley, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Self-limiting conductive extrudates and methods therefor
- Patent number 4,954,695
- Issue date Sep 4, 1990
- Raychem Corporation
- Robert Smith-Johannsen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Layered self-regulating heating article
- Patent number 4,654,511
- Issue date Mar 31, 1987
- Raychem Corporation
- David A. Horsma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Layered self-regulating heating article
- Patent number 4,543,474
- Issue date Sep 24, 1985
- Raychem Corporation
- David A. Horsma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
PTC Compositions and devices comprising them
- Patent number 4,534,889
- Issue date Aug 13, 1985
- Raychem Corporation
- Peter H. van Konynenburg
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Layered self-regulating heating article
- Patent number 4,330,703
- Issue date May 18, 1982
- Raychem Corporation
- David A. Horsma
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of making heater cable of self-limiting conductive extrudates
- Patent number 4,286,376
- Issue date Sep 1, 1981
- Raychem Corporation
- Robert Smith-Johannsen
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Layered self-regulating heating article
- Patent number 4,177,376
- Issue date Dec 4, 1979
- Raychem Corporation
- David A. Horsma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Coated particles and conductive compositions therefrom
- Patent number 4,051,075
- Issue date Sep 27, 1977
- Raychem Corporation
- Robert Smith-Johannsen
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process of coating particles of less than 20 microns with a polymer...
- Patent number 3,992,558
- Issue date Nov 16, 1976
- Raychem Corporation
- Robert Smith-Johannsen
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Benzotrifluoride fuel additive for internal combustion engines
- Patent number 3,947,257
- Issue date Mar 30, 1976
- Raychem Corporation
- Robert Smith-Johannsen
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Robert Smith-Johannsen

Person

Patents Grantslast 30 patents

Self-limiting conductive extrudates and methods therefor

Layered self-regulating heating article

Layered self-regulating heating article

PTC Compositions and devices comprising them

Layered self-regulating heating article

Method of making heater cable of self-limiting conductive extrudates

Layered self-regulating heating article

Coated particles and conductive compositions therefrom

Process of coating particles of less than 20 microns with a polymer...

Benzotrifluoride fuel additive for internal combustion engines