Wing Sum Vincent Kwan

Person

Chicago, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Opaque ink formulations and associated writing instruments
- Patent number 12,209,192
- Issue date Jan 28, 2025
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instruments and associated methods
- Patent number 12,064,989
- Issue date Aug 20, 2024
- SANFORD, L.P.
- Bret Ryan Marschand
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Dry erase inks and associated writing instruments
- Patent number 11,753,558
- Issue date Sep 12, 2023
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Metallic ink composition and writing instrument containing same
- Patent number RE49400
- Issue date Jan 31, 2023
- SANFORD, L.P.
- Wing Sum Vincent Kwan
Information Patent Grant
Writing instruments and associated methods
- Patent number 11,110,738
- Issue date Sep 7, 2021
- Sanford L.P.
- Bret Ryan Marschand
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Ink delivery system
- Patent number 10,245,877
- Issue date Apr 2, 2019
- SANFORD, L.P.
- Daniel Francis Debartolo
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Transitorially erasable ink compositions and writing instruments co...
- Patent number 9,809,722
- Issue date Nov 7, 2017
- SANFORD, L.P.
- Jiandong Zhu
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Metallic ink composition and writing instrument containing same
- Patent number 9,163,153
- Issue date Oct 20, 2015
- Sanford, L.P.
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Irreversible thermochromic ink compositions
- Patent number 8,889,590
- Issue date Nov 18, 2014
- Sanford, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Irreversible color changing ink compositions
- Patent number 8,865,621
- Issue date Oct 21, 2014
- Sanford, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Metallic ink composition and writing instrument containing same
- Patent number 8,846,797
- Issue date Sep 30, 2014
- Sanford, L.P.
- Martin N. Sexton
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Irreversible thermochromic ink compositions
- Patent number 8,709,973
- Issue date Apr 29, 2014
- Sanford, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Irreversible thermochromic ink compositions
- Patent number 8,664,156
- Issue date Mar 4, 2014
- Sanford, L.P.
- Wing Sum V. Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Irreversible thermochromic pigment capsules
- Patent number 8,652,996
- Issue date Feb 18, 2014
- Sanford, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
WRITING NIB ASSEMBLIES AND WRITING INSTRUMENTS
- Publication number 20230339255
- Publication date Oct 26, 2023
- Sanford L.P.
- Helena B. HARRISON
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DRY ERASE INKS AND ASSOCIATED WRITING INSTRUMENTS
- Publication number 20220372313
- Publication date Nov 24, 2022
- Sanford L.P.
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Dry Erase Inks, and Associated Methods and Writing Instruments
- Publication number 20220064464
- Publication date Mar 3, 2022
- Sanford L.P.
- Russell Andrew Vanderhoof
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Writing Instruments and Associated Methods
- Publication number 20210362533
- Publication date Nov 25, 2021
- Sanford, L.P.
- Bret Ryan Marschand
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Writing Instruments and Associated Methods
- Publication number 20200276855
- Publication date Sep 3, 2020
- Sanford, L.P.
- Bret Ryan Marschand
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Opaque Ink Formulations and Associated Writing Instruments
- Publication number 20200255680
- Publication date Aug 13, 2020
- Sanford L.P.
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
INK DELIVERY SYSTEM
- Publication number 20170282633
- Publication date Oct 5, 2017
- SANFORD L.P.
- Daniel Francis Debartolo
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Transitorially Erasable Ink Compositions And Writing Instruments Co...
- Publication number 20170002217
- Publication date Jan 5, 2017
- SANFORD, L.P.
- Jiandong Zhu
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Metallic Ink Composition and Writing Instrument Containing Same
- Publication number 20140272141
- Publication date Sep 18, 2014
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Compositions For Generating On-Demand Dry-Erase Writing Surfaces, F...
- Publication number 20140186531
- Publication date Jul 3, 2014
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
METALLIC INK COMPOSITION AND WRITING INSTRUMENT CONTAINING SAME
- Publication number 20140186529
- Publication date Jul 3, 2014
- Martin N. Sexton
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Irreversible Thermochromic Ink Compositions
- Publication number 20140113813
- Publication date Apr 24, 2014
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS
- Publication number 20140037362
- Publication date Feb 6, 2014
- SANFORD, L.P.
- Wing Sum V. Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS
- Publication number 20130172181
- Publication date Jul 4, 2013
- SANFORD, L.P.
- Wing Sum V. Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS
- Publication number 20130172182
- Publication date Jul 4, 2013
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
IRREVERSIBLE THERMOCHROMIC PIGMENT CAPSULES
- Publication number 20130172183
- Publication date Jul 4, 2013
- SANFORD, L.P.
- Wing Sum Vincent Kwan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Capillary-Action, Glitter Markers and Ink Compositions for Same
- Publication number 20090025602
- Publication date Jan 29, 2009
- SANFORD, L.P.
- Wing Sum Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Eradicable composition and kit
- Publication number 20050192379
- Publication date Sep 1, 2005
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Capillary-action, glitter markers and ink compositions for same
- Publication number 20050095055
- Publication date May 5, 2005
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Color changing correction fluid
- Publication number 20050075419
- Publication date Apr 7, 2005
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Combination hydrophobic/hydrophilic filters/reservoirs for controll...
- Publication number 20050053416
- Publication date Mar 10, 2005
- Wing Sum Vincent Kwan
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
High gloss inks and preparations thereof
- Publication number 20050043436
- Publication date Feb 24, 2005
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Multi-color writing inks
- Publication number 20040182278
- Publication date Sep 23, 2004
- Wing Sum Vincent Kwan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Wing Sum Vincent Kwan

Person

Patents Grantslast 30 patents

Opaque ink formulations and associated writing instruments

Writing instruments and associated methods

Dry erase inks and associated writing instruments

Metallic ink composition and writing instrument containing same

Writing instruments and associated methods

Ink delivery system

Transitorially erasable ink compositions and writing instruments co...

Metallic ink composition and writing instrument containing same

Irreversible thermochromic ink compositions

Irreversible color changing ink compositions

Metallic ink composition and writing instrument containing same

Irreversible thermochromic ink compositions

Irreversible thermochromic ink compositions

Irreversible thermochromic pigment capsules

Patents Applicationslast 30 patents

WRITING NIB ASSEMBLIES AND WRITING INSTRUMENTS

DRY ERASE INKS AND ASSOCIATED WRITING INSTRUMENTS

Dry Erase Inks, and Associated Methods and Writing Instruments

Writing Instruments and Associated Methods

Writing Instruments and Associated Methods

Opaque Ink Formulations and Associated Writing Instruments

INK DELIVERY SYSTEM

Transitorially Erasable Ink Compositions And Writing Instruments Co...

Metallic Ink Composition and Writing Instrument Containing Same

Compositions For Generating On-Demand Dry-Erase Writing Surfaces, F...

METALLIC INK COMPOSITION AND WRITING INSTRUMENT CONTAINING SAME

Irreversible Thermochromic Ink Compositions

IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS

IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS

IRREVERSIBLE THERMOCHROMIC INK COMPOSITIONS

IRREVERSIBLE THERMOCHROMIC PIGMENT CAPSULES

Capillary-Action, Glitter Markers and Ink Compositions for Same

Eradicable composition and kit

Capillary-action, glitter markers and ink compositions for same

Color changing correction fluid

Combination hydrophobic/hydrophilic filters/reservoirs for controll...

High gloss inks and preparations thereof

Multi-color writing inks