Hubertus Psaar

Person

Leverkusen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Thermoreactive recording material
- Patent number 5,134,113
- Issue date Jul 28, 1992
- Bayer Aktiengesellschaft
- Gunter Klug
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Chromogenic enamine compounds, their preparation and use as color f...
- Patent number 5,130,442
- Issue date Jul 14, 1992
- Bayer Aktiengesellschaft
- Karlheinrich Meisel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tetraindolyl-heptamethine derivatives
- Patent number 5,118,814
- Issue date Jun 2, 1992
- Bayer Aktiengesellschaft
- Horst Berneth
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Triarylmethane color-forming agents
- Patent number 5,094,688
- Issue date Mar 10, 1992
- Bayer Aktiengesellschaft
- Udo Eckstein
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Bis(indolyl)ethylene compounds
- Patent number 4,931,567
- Issue date Jun 5, 1990
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Highly concentrated stable solutions of color-forming agent: for pr...
- Patent number 4,923,641
- Issue date May 8, 1990
- Bayer Aktiengesellschaft
- Udo Eckstein
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermoreactive recording material
- Patent number 4,918,048
- Issue date Apr 17, 1990
- Bayer Aktiengesellschaft
- Hubertus Psaar
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Bis(indolyl)ethylene aldehydes
- Patent number 4,902,806
- Issue date Feb 20, 1990
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Bis(indolyl)ethylene process
- Patent number 4,897,494
- Issue date Jan 30, 1990
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tri-phenyl methyl color-forming agents
- Patent number 4,897,223
- Issue date Jan 30, 1990
- Bayer Aktiengesellschaft
- Udo Eckstein
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Dry toners containing fanal pigments based on cationic dyes
- Patent number 4,869,989
- Issue date Sep 26, 1989
- Bayer Aktiengesellschaft
- Roderich Raue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dry toners containing methinefanal pigments
- Patent number 4,849,306
- Issue date Jul 18, 1989
- Bayer Aktiengesellschaft
- Roderich Raue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fanal pigments of closed-ring dry toners containing indamine-and di...
- Patent number 4,847,177
- Issue date Jul 11, 1989
- Bayer Aktiengesellschaft
- Roderich Raue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
1H-imidazo[2,3-a]indol-2-ones as color-forming agents
- Patent number 4,808,719
- Issue date Feb 28, 1989
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Highly concentrated stable solutions of color-forming agents: for p...
- Patent number 4,783,196
- Issue date Nov 8, 1988
- Bayer Aktiengesellshcaft
- Udo Eckstein
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Recording material which reacts under the influence of heat, its pr...
- Patent number 4,600,930
- Issue date Jul 15, 1986
- Bayer Aktiengesellschaft
- Hubertus Psaar
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process for the production of color photographic images and photogr...
- Patent number 4,458,009
- Issue date Jul 3, 1984
- Agfa-Gevaert Aktiengesellschaft
- Edith Weyde
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pressure-sensitive recording material
- Patent number 4,211,436
- Issue date Jul 8, 1980
- Bayer Aktiengesellschaft
- Hans-Peter Kuhlthau
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Methine dyestuffs containing a phenyl azo group
- Patent number 4,201,707
- Issue date May 6, 1980
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Cationic dyestuffs
- Patent number 4,145,537
- Issue date Mar 20, 1979
- Bayer Aktiengesellschaft
- Hubertus Psaar
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Pyrazolinyl indolium dyestuffs
- Patent number 4,143,228
- Issue date Mar 6, 1979
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Indoline linked to 2-pyrazoline
- Patent number 4,138,570
- Issue date Feb 6, 1979
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of oxazine dyestuffs
- Patent number 4,125,717
- Issue date Nov 14, 1978
- Bayer Aktiengesellschaft
- Hubertus Psaar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Hubertus Psaar

Person

Patents Grantslast 30 patents

Thermoreactive recording material

Chromogenic enamine compounds, their preparation and use as color f...

Tetraindolyl-heptamethine derivatives

Triarylmethane color-forming agents

Bis(indolyl)ethylene compounds

Highly concentrated stable solutions of color-forming agent: for pr...

Thermoreactive recording material

Bis(indolyl)ethylene aldehydes

Bis(indolyl)ethylene process

Tri-phenyl methyl color-forming agents

Dry toners containing fanal pigments based on cationic dyes

Dry toners containing methinefanal pigments

Fanal pigments of closed-ring dry toners containing indamine-and di...

1H-imidazo[2,3-a]indol-2-ones as color-forming agents

Highly concentrated stable solutions of color-forming agents: for p...

Recording material which reacts under the influence of heat, its pr...

Process for the production of color photographic images and photogr...

Pressure-sensitive recording material

Methine dyestuffs containing a phenyl azo group

Cationic dyestuffs

Pyrazolinyl indolium dyestuffs

Indoline linked to 2-pyrazoline

Process for the preparation of oxazine dyestuffs