Hidehei Kageyama

KC Kotobuki & Co.: 93 patents #1 of 77Top 2%

KC Kotobuki Printing Co.: 4 patents #2 of 4Top 50%

AC A.T. Cross Company: 2 patents #10 of 34Top 30%

ML Mitsubishi Pencil Company, Limited: 2 patents #127 of 302Top 45%

KK Kabushikikaisya Kotobuki: 1 patents #1 of 6Top 20%

TC The Gillette Company: 1 patents #936 of 1,479Top 65%

TC Toyopolymer Co.: 1 patents #5 of 19Top 30%

Overall (All Time): #13,556 of 4,157,543Top 1%

103

Patents All Time

Issued Patents All Time

Showing 101–103 of 103 patents

Patent #	Title	Co-Inventors	Date
4371277	Automatic pencil	Takahiko Suzuki	1983-02-01
4365390	Clip for writing utensil	Takahiko Suzuki	1982-12-28
4200977	Cutter knife	Toshihiko Kageyama	1980-05-06