Inventor · disambiguated record
Bunji Hirai
Also filed as: HIRAI BUNJI
6 granted patents·31 citations·filing 1978–1987
80Inventor score
Top patents by PatentIndex Score
6 records- 0175US4692485AVinyl benzyl 2,2,6,6-tetramethyl piperidinesADEKA ARGUS CHEMICAL CO LTD·Filed 1985·Granted Sep 8, 1987·12 cites·25 claims
- 0266US4252958AProcess for preparing 2,2,6,6-Tetramethyl-4-oxopiperidineARGUS CHEM·Filed 1978·Granted Feb 24, 1981·5 cites·13 claims
- 0362US4405737AN-2-Hydroxypropyl piperidines and compositions thereofADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Sep 20, 1983·5 cites·35 claims
- 0460US4798836ABis-(2,2,6,6-tetramethyl-piperidyl) diimides as light stabilizers for synthetic polymersADEKA ARGUS CHEMICAL CO LTD·Filed 1987·Granted Jan 17, 1989·5 cites·16 claims
- 0555US4418196AProcess for preparing triacetone amineADEKA ARGUS CHEMICAL CO LTD·Filed 1982·Granted Nov 29, 1983·3 cites·16 claims
- 0629US4767834AVinyl benzyl 2,2,6,6-tetramethyl piperidinesADEKA ARGUS CHEMICAL CO LTD·Filed 1987·Granted Aug 30, 1988·1 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →