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Sakae Hayao
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Chatsworth, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Ink refilling assembly
Patent number
5,980,029
Issue date
Nov 9, 1999
Mitsubishi Pencil Corporation of America
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Apparatus for refilling an ink cartridge
Patent number
5,845,682
Issue date
Dec 8, 1998
Mitsubishi Pencil Corporation of America
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Device for making a hole in an ink cartridge
Patent number
5,819,627
Issue date
Oct 13, 1998
Mitsubishi Pencil Corporation of America
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Ink cartridge holding box for refilling
Patent number
5,784,086
Issue date
Jul 21, 1998
Mitsubishi Pencil Corporation of America
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Ink refilling assembly
Patent number
5,595,223
Issue date
Jan 21, 1997
Mitsubishi Pencil Corporation of America
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Ink refill kit
Patent number
5,513,747
Issue date
May 7, 1996
Sercomp Corporation
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Ribbon drive assembly for ribbon cartridge
Patent number
5,487,615
Issue date
Jan 30, 1996
Sercomp Corporation
Sakae Hayao
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS