Ralf-Burkhard Dethlefs

Person

Osnabruck, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Photographic support material with polyolefin back coating blend
- Patent number 5,457,016
- Issue date Oct 10, 1995
- Felix Schoeller jr. Papierfabriken GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for the production of a coating material for photographic su...
- Patent number 5,455,073
- Issue date Oct 3, 1995
- Felix Schoeller jr. Papierfabriken GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Photographic support material
- Patent number 5,332,623
- Issue date Jul 26, 1994
- Felix Schoeller jr. Papierfabrik GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Pigment-containing premixture of titanium dioxide with olefin polymer
- Patent number 5,252,658
- Issue date Oct 12, 1993
- Felix Schoeller Jr. GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- B32 - LAYERED PRODUCTS
Information Patent Grant
Process for the production of pigment/plastic premixes
- Patent number 5,114,990
- Issue date May 19, 1992
- Felix Schoeller Jr. GmbH KG
- Ralf-Burkhard Dethlefs
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Plastic concentrate for photographic support material coatings
- Patent number 5,049,595
- Issue date Sep 17, 1991
- Felix Schoeller jr. GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Support material for photographic coatings
- Patent number 5,004,644
- Issue date Apr 2, 1991
- Felix Schoeller Jr. GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Water-resistant support material for light-sensitive materials
- Patent number 4,935,298
- Issue date Jun 19, 1990
- Felix Schoeller Jr. GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- B32 - LAYERED PRODUCTS
Information Patent Grant
Photographic paper support with a water resistant coating of polyet...
- Patent number 4,898,773
- Issue date Feb 6, 1990
- Felix Schoeller Jr. GmbH & Co. KG
- Ralf-Burkhard Dethlefs
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Photographic paper support manufacture
- Patent number 4,895,757
- Issue date Jan 23, 1990
- Felix Schoeller, Jr. GmbH & Co. K.G.
- Wolfram Wysk
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Ralf-Burkhard Dethlefs

Person

Patents Grantslast 30 patents

Photographic support material with polyolefin back coating blend

Method for the production of a coating material for photographic su...

Photographic support material

Pigment-containing premixture of titanium dioxide with olefin polymer

Process for the production of pigment/plastic premixes

Plastic concentrate for photographic support material coatings

Support material for photographic coatings

Water-resistant support material for light-sensitive materials

Photographic paper support with a water resistant coating of polyet...

Photographic paper support manufacture