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last 30 patents
Information
Patent Grant
Solid having reversibly invisible/visible thermochromic constructio...
Patent number
6,468,088
Issue date
Oct 22, 2002
The Pilot Ink Co., Ltd.
Katsuyuki Fujita
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Method for energizing energization-operated toy element and energiz...
Patent number
5,932,992
Issue date
Aug 3, 1999
The Pilot Ink Co., Ltd.
Tsutomu Tomatsu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Thermoplastic resin compositions and temperature-dependent shape-tr...
Patent number
5,895,718
Issue date
Apr 20, 1999
The Pilot Ink Co., Ltd.
Naoya Ishimura
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Thermally color-changeable toy
Patent number
5,716,253
Issue date
Feb 10, 1998
The Pilot Ink Co., Ltd.
Tadashi Aoki
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Color variation inducing device
Patent number
5,502,967
Issue date
Apr 2, 1996
The Pilot Ink Co., Ltd.
Tanehiro Nakagawa
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
Electrothermal color-varying device and toy utilizing the same
Patent number
5,316,513
Issue date
May 31, 1994
The Pilot Ink Co., Ltd.
Tanehiro Nakagawa
G02 - OPTICS
Information
Patent Grant
Compressor, spray apparatus using the compressor, and air brush for...
Patent number
5,088,903
Issue date
Feb 18, 1992
Pilot Ink Co., Ltd.
Tsutomu Tomatsu
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...