Inventor · disambiguated record
Joseph Donald Surmatis
Also filed as: SURMATIS JOSEPH DONALD
8 granted patents·104 citations·filing 1974–1976
84Inventor score
Files withHOFFMANN LA ROCHE8
Top patents by PatentIndex Score
8 records- 0195US3989757AIsomerizing cis-carotenoids to all-trans-carotenoidsHOFFMANN LA ROCHE·Filed 1974·Granted Nov 2, 1976·61 cites·8 claims
- 0291US3974181ATrimethyl-1,4-dioxaspiro[4,5]dec-7-en-8-methanolHOFFMANN LA ROCHE·Filed 1975·Granted Aug 10, 1976·22 cites·1 claims
- 0382US3932485AImproved preparation of Wittig salt of vinyl β-ionolHOFFMANN LA ROCHE·Filed 1974·Granted Jan 13, 1976·15 cites·6 claims
- 0451US4005031ANickel peroxide oxidizing agentHOFFMANN LA ROCHE·Filed 1976·Granted Jan 25, 1977·3 cites·13 claims
- 0548US3941841AMethod for synthesizing rhodoxanthinHOFFMANN LA ROCHE·Filed 1974·Granted Mar 2, 1976·2 cites·1 claims
- 0639US3985734AMethod for the preparation of the copper complex of 6-methoxy-1-phenazinol 5,10-dioxideHOFFMANN LA ROCHE·Filed 1974·Granted Oct 12, 1976·1 cites·4 claims
- 0730US4003891APreparation of metal complexes of 6-methoxy-1-phenazinol 5,10 dioxideHOFFMANN LA ROCHE·Filed 1975·Granted Jan 18, 1977·0 cites·7 claims
- 0829US3966734AMethod for the purification of 6-methoxy-1-phenazinol 5,10-dioxideHOFFMANN LA ROCHE·Filed 1975·Granted Jun 29, 1976·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →