Peter F. Erhardt

Person

Webster, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Hybrid scavengeless development using ion charging
- Patent number 5,950,057
- Issue date Sep 7, 1999
- Xerox Corporation
- Peter F. Erhardt
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
System for controlling the color of toner mixtures
- Patent number 5,468,586
- Issue date Nov 21, 1995
- Xerox Corporation
- James M. Proper
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner compositions with charge enhancing additives
- Patent number 5,079,122
- Issue date Jan 7, 1992
- Xerox Corporation
- Robert D. Bayley
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ortho-halo phenyl carboxylic acid charge enhancing additives
- Patent number 4,411,974
- Issue date Oct 25, 1983
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive toners containing long chain hydrazinium compounds
- Patent number 4,326,019
- Issue date Apr 20, 1982
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive color toners
- Patent number 4,324,851
- Issue date Apr 13, 1982
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Attrition process for alteration of toner particles containing cond...
- Patent number 4,293,632
- Issue date Oct 6, 1981
- Xerox Corporation
- Charles G. Dickerson
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of imagining using positive toners containing alkyl morpholi...
- Patent number 4,287,284
- Issue date Sep 1, 1981
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive toners containing alkyl picolinium compounds
- Patent number 4,286,038
- Issue date Aug 25, 1981
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive toners containing long chain hydrazinium compounds
- Patent number 4,269,922
- Issue date May 26, 1981
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Imaging system
- Patent number 4,264,697
- Issue date Apr 28, 1981
- Xerox Corporation
- Steven R. Perez
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive toners containing alkyl morpholinium compounds as charge c...
- Patent number 4,264,702
- Issue date Apr 28, 1981
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnetic or electrostatographic imaging and high speed fusing metho...
- Patent number 4,256,818
- Issue date Mar 17, 1981
- Xerox Corporation
- Daniel F. Blossey
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positive toners containing alkyl picolinium compounds as charge con...
- Patent number 4,254,205
- Issue date Mar 3, 1981
- Xerox Corporation
- Chin H. Lu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Alteration of tesselated magnetic particles by fracture
- Patent number 4,171,274
- Issue date Oct 16, 1979
- Xerox Corporation
- William M. Schwarz
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of making an imaging member
- Patent number 4,014,728
- Issue date Mar 29, 1977
- Xerox Corporation
- Peter F. Erhardt
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of making a photoreceptor
- Patent number 3,979,495
- Issue date Sep 7, 1976
- Xerox Corporation
- Peter F. Erhardt
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing powder images
- Patent number 3,950,168
- Issue date Apr 13, 1976
- Xerox Corporation
- Peter Franklin Erhardt
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Peter F. Erhardt

Person

Patents Grantslast 30 patents

Hybrid scavengeless development using ion charging

System for controlling the color of toner mixtures

Toner compositions with charge enhancing additives

Ortho-halo phenyl carboxylic acid charge enhancing additives

Positive toners containing long chain hydrazinium compounds

Positive color toners

Attrition process for alteration of toner particles containing cond...

Method of imagining using positive toners containing alkyl morpholi...

Positive toners containing alkyl picolinium compounds

Positive toners containing long chain hydrazinium compounds

Imaging system

Positive toners containing alkyl morpholinium compounds as charge c...

Magnetic or electrostatographic imaging and high speed fusing metho...

Positive toners containing alkyl picolinium compounds as charge con...

Alteration of tesselated magnetic particles by fracture

Method of making an imaging member

Method of making a photoreceptor

Fixing powder images