Inventor · disambiguated record
Yoshio Midorikawa
Also filed as: MIDORIKAWA YOSHIO
9 granted patents·110 citations·filing 1976–1997
88Inventor score
Files withGLASROCK PRODUCTS4TOYO POLYMER KK2MIDORIKAWA YOSHIO1TOHYO PORIMAH KABUSHIKIGAISHA1TOKYO POLYMER CO LTD1
Top patents by PatentIndex Score
9 records- 0180US4540300ARetractable capless marking penTOYO POLYMER KK·Filed 1984·Granted Sep 10, 1985·34 cites·2 claims
- 0263US4119756AMethod of manufacturing a marking pen having a nib and an ink reservoir integral therewithGLASROCK PRODUCTS·Filed 1976·Granted Oct 10, 1978·16 cites·9 claims
- 0358US4104781AMethod of manufacturing a marking pen having a nib and an ink reservoir integral therewithGLASROCK PRODUCTS·Filed 1976·Granted Aug 8, 1978·15 cites·3 claims
- 0452US4751584ADisplay-reproducing apparatusTOKYO POLYMER CO LTD·Filed 1986·Granted Jun 14, 1988·14 cites·17 claims
- 0551US5925580ARepellent cloth using fluoroplastic fibersTOYO POLYMER KK·Filed 1997·Granted Jul 20, 1999·7 cites·6 claims
- 0646US4086312AWriting pen core having an integral nib and ink reservoir and method of manufactureGLASROCK PRODUCTS·Filed 1976·Granted Apr 25, 1978·9 cites·5 claims
- 0738US4093769ACapillary body and method of producing the sameGLASROCK PRODUCTS·Filed 1976·Granted Jun 6, 1978·5 cites·8 claims
- 0836US4287146ANib-type writing pen and method of manufactureMIDORIKAWA YOSHIO·Filed 1978·Granted Sep 1, 1981·6 cites·6 claims
- 0926US5073220AMethod for producing a gripping stickTOHYO PORIMAH KABUSHIKIGAISHA·Filed 1989·Granted Dec 17, 1991·4 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →