Inventor · disambiguated record
Masuo Kubota
Also filed as: KUBOTA MASUO
3 granted patents·47 citations·filing 1989–1990
72Inventor score
Technology areasB43K
Files withKOTOBUKI & CO LTD3
Top patents by PatentIndex Score
3 records- 0156US5074694ALatch mechanism for retractable writing instrumentsKOTOBUKI & CO LTD·Filed 1990·Granted Dec 24, 1991·17 cites·4 claims
- 0255US4973179AClip actuated latch mechanism for retractable writing instrumentsKOTOBUKI & CO LTD·Filed 1989·Granted Nov 27, 1990·13 cites·4 claims
- 0354US5056947ADual refill-type writing utensilKOTOBUKI & CO LTD·Filed 1990·Granted Oct 15, 1991·17 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →