Wing Sum Vincent Kwan

Person

Deerfield, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Laser markable coating
- Patent number 6,478,861
- Issue date Nov 12, 2002
- Videojet Technologies Inc.
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Laser markable coating
- Patent number 6,261,348
- Issue date Jul 17, 2001
- Marconi Data Systems Inc.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Modification of chargeable pigment particles
- Patent number 6,235,829
- Issue date May 22, 2001
- Marconi Data Systems Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Transparent coating for laser marking
- Patent number 6,210,472
- Issue date Apr 3, 2001
- Marconi Data Systems Inc.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Black iron oxide with improved heat stability and method of prepari...
- Patent number 6,179,907
- Issue date Jan 30, 2001
- Marconi Data Systems Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing iron-containing pigment with enhanced dispersib...
- Patent number 6,024,789
- Issue date Feb 15, 2000
- Videojet Systems International, Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hydrophobic treatment of pigments
- Patent number 5,922,121
- Issue date Jul 13, 1999
- Videojet Systems International, Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hydrophilic treatment of pigments
- Patent number 5,865,885
- Issue date Feb 2, 1999
- Videojet Systems International, Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Pigment dispersion
- Patent number 5,855,661
- Issue date Jan 5, 1999
- Videojet Systems International, Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for preparing magnetic ink and dry pigment particles used th...
- Patent number 5,849,074
- Issue date Dec 15, 1998
- Videojet Systems International, Inc.
- Wing Sum Vincent Kwan
- C01 - INORGANIC CHEMISTRY

Wing Sum Vincent Kwan

Person

Patents Grantslast 30 patents

Laser markable coating

Laser markable coating

Modification of chargeable pigment particles

Transparent coating for laser marking

Black iron oxide with improved heat stability and method of prepari...

Method of preparing iron-containing pigment with enhanced dispersib...

Hydrophobic treatment of pigments

Hydrophilic treatment of pigments

Pigment dispersion

Method for preparing magnetic ink and dry pigment particles used th...