Inventor · disambiguated record
Nobuo Shigematsu
Also filed as: SHIGEMATSU NOBUO
8 granted patents·5 pending applications·121 citations·filing 1982–2019
87Inventor score
Top patents by PatentIndex Score
13 records- 0174US7086400B2MaskSHIGEMATSU WORKS·Filed 2003·Granted Aug 8, 2006·28 cites·1 claims
- 0271US10576313B2Detachable connectorSHIGEMATSU WORKS·Filed 2016·Granted Mar 3, 2020·2 cites·4 claims
- 0363US8671943B2Breathing apparatusSHIGEMATSU NOBUO·Filed 2008·Granted Mar 18, 2014·8 cites·7 claims
- 0462US4501272AMaskSHIGEMATSU WORKS·Filed 1982·Granted Feb 26, 1985·33 cites·5 claims
- 0552US2012000473A1MaskSHIGEMATSU NOBUO·Filed 2009·Application pending·0 cites
- 0651US2021213309A1Facepiece and Breathing ApparatusSHIGEMATSU WORKS·Filed 2019·Application pending·0 cites
- 0750US4748695AFace shield assemblySHIGEMATSU WORKS·Filed 1986·Granted Jun 7, 1988·20 cites·5 claims
- 0846US2021205641A1Back Carrier and Breathing ApparatusAIR WATER SAFETY SERVICE INC·Filed 2019·Application pending·0 cites
- 0943US2019046817A1Full face piece of a breathing apparatusSHIGEMATSU WORKS·Filed 2016·Application pending·0 cites
- 1039US2013318694A1Chemical protective suitSHIGEMATSU NOBUO·Filed 2011·Application pending·0 cites
- 1133US4991577AExhalation valve means of a respiration maskSHIGEMATSU WORKS·Filed 1988·Granted Feb 12, 1991·8 cites·6 claims
- 1228US4892094APressure responsive diaphragm valveSHIGEMATSU WORKS·Filed 1988·Granted Jan 9, 1990·3 cites·6 claims
- 1326US5829433AInhalation valveSHIGERMATSU WORKS CO LTD·Filed 1996·Granted Nov 3, 1998·19 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →