P

Inventor

MIYAMOTO MASARU

JP46 patents
⚠️ This page may combine multiple inventors who share the name “MIYAMOTO MASARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI PENCIL CO

21 patents
US6613135B1Sep 2, 2003

Pseudo-plastic water based ink for ballpoint pen

MITSUBISHI PENCIL CO21 citations92
US6120590ASep 19, 2000

Water-base ink having metallic lustrous color for ballpoint pen

MITSUBISHI PENCIL CO42 citations92
US6492435B1Dec 10, 2002

Water based white color tone pigment ink for ball point pen

MITSUBISHI PENCIL CO20 citations90
US6770688B1Aug 3, 2004

Water-based ballpoint ink composition

MITSUBISHI PENCIL CO17 citations84
US6264729B1Jul 24, 2001

Water based ink composition for writing instrument

MITSUBISHI PENCIL CO17 citations84
US6776829B2Aug 17, 2004

Water-based ink composition for writing utensil

MITSUBISHI PENCIL CO15 citations83
US6390710B1May 21, 2002

Aqueous gel ink-filled ball point pen

MITSUBISHI PENCIL CO12 citations74
US6491747B2Dec 10, 2002

Water based ink composition for writing instrument

MITSUBISHI PENCIL CO6 citations73
US6423127B1Jul 23, 2002

Pseudo-plastic water base ink for ball point pen

MITSUBISHI PENCIL CO9 citations73
US6261351B1Jul 17, 2001

Water based ink for ball point pen

MITSUBISHI PENCIL CO11 citations73
US6176910B1Jan 23, 2001

Pseudoplastic water based ink for ballpoint pen

MITSUBISHI PENCIL CO10 citations73
US6451099B1Sep 17, 2002

Water based ink composition for ball point pen

MITSUBISHI PENCIL CO13 citations71
US6312510B1Nov 6, 2001

Water-base white pigment ink for ballpoints

MITSUBISHI PENCIL CO13 citations71
US7037019B2May 2, 2006

Ink-storing member for writing instrument

MITSUBISHI PENCIL CO4 citations63
US6599352B1Jul 29, 2003

Water-based ink composition for writing instrument

MITSUBISHI PENCIL CO4 citations62
US6471759B2Oct 29, 2002

Water based ink composition for writing instrument

MITSUBISHI PENCIL CO2 citations62
US7345100B2Mar 18, 2008

Water-based ink composition for ball-point pen

MITSUBISHI PENCIL CO4 citations61
US7279512B2Oct 9, 2007

Water-based ink composition for ballpoint pen

MITSUBISHI PENCIL CO3 citations61
US7179006B2Feb 20, 2007

Ink follower

MITSUBISHI PENCIL CO0 citations52
US7179005B2Feb 20, 2007

Ink follower for water-based ink ballpoint pen

MITSUBISHI PENCIL CO0 citations52
US6554890B2Apr 29, 2003

Water based ink composition for writing instrument

MITSUBISHI PENCIL CO1 citations51

NIPPON TELEGRAPH & TELEPHONE

5 patents

SONY CORP

4 patents

MURABAYASHI NOBORU

4 patents

MINOLTA CO LTD

3 patents

OKAMOTO HIROSHIGE

2 patents

MITSUBISHI PENCIL KABUSHIKIKAI

2 patents

MIYAMOTO MASARU

2 patents

NAT INST AGROBIOLOGICAL RESOUR

1 patent

NTT INC

1 patent

IWATSU ELECTRIC CO LTD

1 patent