Hellmut Hoffmann — 20 Patents at Bayer Healthcare

Hellmut Hoffmann has been granted 20 US patents while listed as an inventor at Bayer Healthcare. The first was granted in 1980 and the most recent in July 1987. Hellmut Hoffmann ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Hellmut Hoffmann in Wuppertal, DE.

Patents per Year

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Showing 1–20 of 20 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4678777	Pest-combating agents containing phosphorus-heterocyclic compounds	Bernd-Wieland Kruger, Ernst Roos, Wolfgang Behrenz	1987-07-07
4609646	2-(thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pesticides	Bernd-Wieland Kruger, Wolfgang Behrenz	1986-09-02
4489013	Preparation of .alpha.-oxo-.alpha.-(3-alkoxycarbonyl-2,2-dimethyl-cycloprop-1-yl)-metha ne-phosphonic acid esters	—	1984-12-18
4473558	2-(Thi)oxo-1,3,2-oxazaphospholanes as synergizing agents for pesticides	Bernd-Wieland Kruger, Wolfgang Behrenz	1984-09-25
4420435	Alpha-hydroxy-phosphonic acid esters	Fritz Maurer, Uwe Priesnitz, Hans-Jochem Riebel	1983-12-13
4387060	2-Thi-1,3,2-oxazaphospholanes	Bernd-Wieland Kruger, Wolfgang Behrenz	1983-06-07
4358409	Preparation of styryl cyclopropane insecticide intermediates	Fritz Maurer, Uwe Priesnitz, Hans-Jochem Riebel	1982-11-09
4356127	Preparation of 3-(2,2-dichloro-vinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid derivatives	—	1982-10-26
4342704	Process for the preparation of 1,1-dichloroalkenes	Fritz Maurer, Uwe Priesnitz, Hans-Jochem Riebel	1982-08-03
4330482	Process for the preparation of halogenoalkenes	—	1982-05-18
4317783	1-Oxo-3-methyl-2-butene phosphonic acid esters	—	1982-03-02	$2,570,000
4307033	Preparation of 3,3-dimethyl-cyclopropane-1,1,2-tricarboxylic acid derivatives and intermediates therefor	Fritz Maurer, Uwe Priesnitz, Hans-Jochem Riebel	1981-12-22	$1,101,000
4296241	Preparation of 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid derivatives	Fritz Maurer, Uwe Priesnitz, Hans-Jochem Riebel	1981-10-20	$1,396,000
4294762	Preparation of .alpha.-cyano-benzyl esters	—	1981-10-13	$755,000
4279920	2,2-Dimethyl-3-(2-bromo-2-phenyl-vinyl)-cyclopropanecarboxylic acid 3-phenoxybenzyl esters and pesticidal use	Rainer Fuchs, Ingeborg Hammann, Bernhard Homeyer, Wilhelm Stendel	1981-07-21	$873,000
4276225	Decarbalkoxylation of carboxylic acid esters	Reinhard Lantzsch	1981-06-30	$799,000
4248866	Combating arthropods with N-(O-ethyl-S-n-propyl-thiophosphoryloxy)-naphthalimides	Christa Fest, Ingeborg Hammann, Wilhelm Stendel	1981-02-03	$750,000
4237124	Combating pests with O-ethyl-S-n-propyl-N-alkylamino-methylidene thiolphosphoric acid diester-imides	Ingeborg Hammann, Bernhard Homeyer	1980-12-02	$1,114,000
4229444	Pesticidal O-alkyl-O-(1,5-disubstituted-1,2,4-triazolyl-(3)-thiono-phosphoric (phosphonic) acid esters and ester-amides	Ingeborg Hammann, Wolfgang Behrenz, Bernhard Homeyer, Wilhelm Stendel	1980-10-21	$1,020,000
4195082	Combating arthropods with 0-alkyl-0-trifluoromethylsulphonylphenyl-thiono (thiol)-phosphoric acid esters	Erich Klauke, Ingeborg Hammann	1980-03-25	$1,185,000

Hellmut Hoffmann — 20 Patents

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