Robert W. H. Chang

Person

Shoreview, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Lubricating and moisturizing shaving preparations
- Patent number 5,294,438
- Issue date Mar 15, 1994
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Encapsulated cosmetic materials and process of making
- Patent number 5,013,473
- Issue date May 7, 1991
- Minnesota Mining and Manufacturing Company
- Robert J. Norbury
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Encapsulated cosmetic materials and process of making
- Patent number 4,976,961
- Issue date Dec 11, 1990
- Minnesota Mining and Manufacturing Company
- Robert J. Norbury
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Lipstick sampling device
- Patent number 4,876,136
- Issue date Oct 24, 1989
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Cleansing pad
- Patent number 4,769,022
- Issue date Sep 6, 1988
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Cover film on lipstick sampler
- Patent number 4,755,433
- Issue date Jul 5, 1988
- Minnesota Mining and Manufacturing Company
- Vinu Patel
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions and method for reducing elution of therapeutic agents...
- Patent number 4,510,127
- Issue date Apr 9, 1985
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions for reducing elution of therapeutic agents from teeth
- Patent number RE31787
- Issue date Jan 1, 1985
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- 424 - Drug, bio-affecting and body treating compositions
Information Patent Grant
Composition and method for reducing elution of therapeutic agents f...
- Patent number 4,485,090
- Issue date Nov 27, 1984
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Composition and method for reducing elution of therapeutic agents f...
- Patent number 4,470,964
- Issue date Sep 11, 1984
- Minnesota Minning and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Instant hot or cold, reusable cold pack
- Patent number 4,462,224
- Issue date Jul 31, 1984
- Minnesota Mining and Manufacturing Company
- Wayne K. Dunshee
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions and method for reducing elution of therapeutic agents...
- Patent number 4,428,930
- Issue date Jan 31, 1984
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions and method for reducing elution of therapeutic agents...
- Patent number 4,366,146
- Issue date Dec 28, 1982
- Minnesota Mining and Manufacturing Co.
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions for reducing elution of therapeutic agents from teeth
- Patent number 4,304,766
- Issue date Dec 8, 1981
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Compositions and methods for reducing elution of therapeutic agents...
- Patent number 4,243,658
- Issue date Jan 6, 1981
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Composition and method for inhibiting plaque formation
- Patent number 4,170,636
- Issue date Oct 9, 1979
- Minnesota Mining and Manufacturing Company
- Michael R. Engel
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Non-greasy compositions
- Patent number 4,164,563
- Issue date Aug 14, 1979
- Minnesota Mining and Manufacturing Company
- Robert W. H. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Robert W. H. Chang

Person

Patents Grantslast 30 patents

Lubricating and moisturizing shaving preparations

Encapsulated cosmetic materials and process of making

Encapsulated cosmetic materials and process of making

Lipstick sampling device

Cleansing pad

Cover film on lipstick sampler

Compositions and method for reducing elution of therapeutic agents...

Compositions for reducing elution of therapeutic agents from teeth

Composition and method for reducing elution of therapeutic agents f...

Composition and method for reducing elution of therapeutic agents f...

Instant hot or cold, reusable cold pack

Compositions and method for reducing elution of therapeutic agents...

Compositions and method for reducing elution of therapeutic agents...

Compositions for reducing elution of therapeutic agents from teeth

Compositions and methods for reducing elution of therapeutic agents...

Composition and method for inhibiting plaque formation

Non-greasy compositions