Inventor · disambiguated record
Isao Koyama
Also filed as: KOYAMA ISAO
10 granted patents·1 pending application·242 citations·filing 1974–2009
90Inventor score
Files withCITIZEN WATCH CO LTD4WAKO PURE CHEM IND LTD2FUKUHARA NEEDLE CO LTD1ITAI TOMOKAZU1KOYAMA ISAO1
Top patents by PatentIndex Score
11 records- 0188US4597228AVacuum suction deviceCITIZEN WATCH CO LTD·Filed 1984·Granted Jul 1, 1986·80 cites·3 claims
- 0277US6298692B1Knitting instrumentalities for a knitting machine and method of forming sameFUKUHARA NEEDLE CO LTD·Filed 1999·Granted Oct 9, 2001·24 cites·6 claims
- 0374US6102823AToothed power transmission beltMITSUBOSHI BELTING LTD·Filed 1992·Granted Aug 15, 2000·29 cites·32 claims
- 0474US4234811ASupporting structure for a thickness-shear type crystal oscillator for watchesCITIZEN WATCH CO LTD·Filed 1978·Granted Nov 18, 1980·16 cites·1 claims
- 0572US5814472AMeasurement of LDL-cholesterolWAKO PURE CHEM IND LTD·Filed 1997·Granted Sep 29, 1998·43 cites·34 claims
- 0667US5925534AMethod for measuring LDL-cholesterolWAKO PURE CHEM IND LTD·Filed 1998·Granted Jul 20, 1999·35 cites·33 claims
- 0756US3988621ASupporting structure for a thickness-shear type quartz oscillatorCITIZEN WATCH CO LTD·Filed 1974·Granted Oct 26, 1976·10 cites·3 claims
- 0855US8130998B2Miniature speaker device and television setKOYAMA ISAO·Filed 2009·Granted Mar 6, 2012·2 cites·20 claims
- 0942US2004197726A1Clip type orthodontic anchorFiled 2003·Application pending·0 cites
- 1036US4079281AShape, AT-cut crystal oscillatorCITIZEN WATCH CO LTD·Filed 1976·Granted Mar 14, 1978·3 cites·5 claims
- 1126US8158375B2Polymer and method of measuring cholesterol therewithITAI TOMOKAZU·Filed 2006·Granted Apr 17, 2012·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →