Hans W. Frass

Person

Wiesbaden, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Radiation-sensitive recording material with a positive-working, rad...
- Patent number 5,378,584
- Issue date Jan 3, 1995
- Hoechst Aktiengesellschaft
- Hans W. Frass
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Radiation-sensitive mixture, radiation-sensitive recording material...
- Patent number 5,376,496
- Issue date Dec 27, 1994
- Hoechst Aktiengesellschaft
- Andreas Elsaesser
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive-working 1,2-quinone diazide radiation-sensitive mixture an...
- Patent number 5,368,975
- Issue date Nov 29, 1994
- Hoechst Aktiengesellschaft
- Andreas Elsaessser
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer composition for irradiated, radiation-sensitive positive-...
- Patent number 5,292,626
- Issue date Mar 8, 1994
- Hoechst Aktiengesellschaft
- Gerhard Buhr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for producing negative copies
- Patent number 5,227,281
- Issue date Jul 13, 1993
- Hoechst Aktiengesellschaft
- Otfried Gaschler
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for the production of negative relief copies utilizing reve...
- Patent number 4,990,429
- Issue date Feb 5, 1991
- Hoechst Aktiengesellschaft
- Paul Stahlhofen
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive composition, photosensitive copying material prepare...
- Patent number 4,889,788
- Issue date Dec 26, 1989
- Hoechst Aktiengesellschaft
- Paul Stahlhofen
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Radiation-sensitive copying composition
- Patent number 4,101,323
- Issue date Jul 18, 1978
- Hoechst Aktiengesellschaft
- Gerhard Buhr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hans W. Frass

Person

Patents Grantslast 30 patents

Radiation-sensitive recording material with a positive-working, rad...

Radiation-sensitive mixture, radiation-sensitive recording material...

Positive-working 1,2-quinone diazide radiation-sensitive mixture an...

Developer composition for irradiated, radiation-sensitive positive-...

Process for producing negative copies

Process for the production of negative relief copies utilizing reve...

Photosensitive composition, photosensitive copying material prepare...

Radiation-sensitive copying composition