Inventor
SCHREYER GERD
44 patents
⚠️ This page may combine multiple inventors who share the name “SCHREYER GERD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DEGUSSA
36 patentsUS4150241AApr 17, 1979
Process for the production of pure racemic acid and mesotartaric acid and separation of maleic acid from synthetic tartaric acid
DEGUSSA21 citations81
US4048225ASep 13, 1977
Process for the production of pure racemic acid and mesotartaric acid
DEGUSSA20 citations81
US4303621ADec 1, 1981
Process for the recovery of methionine and potassium bicarbonate
DEGUSSA25 citations79
US4025540AMay 24, 1977
Process for the production of pure carboxylic acid-1-monoglycerides
DEGUSSA25 citations77
US4377344AMar 22, 1983
Apparatus for bringing liquids in contact
DEGUSSA15 citations72
US4314064AFeb 2, 1982
Process for the production of nicotinamide
DEGUSSA10 citations72
US4228084AOct 14, 1980
Process for the production of glycidyl methacrylate
DEGUSSA10 citations72
US4197161AApr 8, 1980
Process for the recovery of catalysts in the epoxidation and hydroxylation of olefinic compounds
DEGUSSA11 citations72
US4052445AOct 4, 1977
Process for the production of alkyl sulfonic acids
DEGUSSA6 citations72
US4009188AFeb 22, 1977
Continuous process for recovery of glycide
DEGUSSA7 citations71
US3960766AJun 1, 1976
Catalyst for the production of pyridine and 3-methylpyridine
DEGUSSA9 citations71
US4065510ADec 27, 1977
Production of an alkenol from an alkene oxide
DEGUSSA14 citations70
US4101570AJul 18, 1978
Process for the production of percarboxylic acid solutions in organic solvents
DEGUSSA8 citations68
US4271297AJun 2, 1981
Process for the production of suspension or solutions of cyanuric chloride in organic solvents (I)
DEGUSSA5 citations62
US4171445AOct 16, 1979
Process for the production of pyridine and 3-methyl pyridine
DEGUSSA3 citations62
US4059619ANov 22, 1977
Process for the preparation of percarboxylic acid solutions
DEGUSSA6 citations62
US4046862ASep 6, 1977
Process for the production of cyanogen chloride using hydrogen peroxide with pressure
DEGUSSA5 citations62
US4017413AApr 12, 1977
Process for the production of solutions or suspensions of cyanuric chloride in aqueous organic solvents
DEGUSSA6 citations62
US3949060AApr 6, 1976
Process for the production of cyanogen chloride
DEGUSSA2 citations62
US4139536AFeb 13, 1979
Process for the recovery of nicotinamide
DEGUSSA2 citations61
US4058662ANov 15, 1977
Process for the substitution of chlorine atoms of cyanuric chloride
DEGUSSA6 citations61
US4054739AOct 18, 1977
Process for the substitution of chlorine atoms of cyanuric chloride
DEGUSSA6 citations61
US3961023AJun 1, 1976
Process for the production of cyanogen chloride and hydrogen chloride
DEGUSSA3 citations61
US3946069AMar 23, 1976
Process of making penicillamine
DEGUSSA2 citations61
US3931208AJan 6, 1976
Process for the production of thiazolines-(3)
DEGUSSA4 citations61
US4089887AMay 16, 1978
Process for the production of isothiocyanates
DEGUSSA4 citations59
US4387081AJun 7, 1983
Process for the production of hydrogen cyanide
DEGUSSA4 citations58
US4090024AMay 16, 1978
Process for the production of skatylhydantoin
DEGUSSA0 citations52
US4007222AFeb 8, 1977
Process for the production of 2-chlorocaproic acids
DEGUSSA1 citations52
US3956304AMay 11, 1976
Preparation of 2-methyl-4-isopropylidene-2-oxazolin-5-one
DEGUSSA1 citations52
US4237299ADec 2, 1980
Process for the recovery of pyridine and 3-methylpyridine
DEGUSSA0 citations51
US4089892AMay 16, 1978
Process for the preparation of percarboxylic acid solutions
DEGUSSA1 citations51
US3947552AMar 30, 1976
Process for the purification of cyanogen chloride
DEGUSSA1 citations51
US4434148AFeb 28, 1984
Working up of the residual gases resulting from the production of cyanuric chloride
DEGUSSA0 citations46
US4269979AMay 26, 1981
Process for the production of suspension or solution of cyanuric chloride in organic solvents (II)
DEGUSSA0 citations41
US4061674ADec 6, 1977
Process of making penicillamine
DEGUSSA0 citations40
BAYER AG
5 patentsUS4113747ASep 12, 1978
Process for the preparation of propylene oxide
BAYER AG19 citations81
US4341709AJul 27, 1982
Preparation of ε-caprolactone
BAYER AG15 citations73
US4137242AJan 30, 1979
Process for the preparation of propylene oxide
BAYER AG8 citations73
US4087455AMay 2, 1978
Process for the continuous preparation of percarboxylic acids in organic solutions
BAYER AG6 citations62
US4159925AJul 3, 1979
Process for isolating propylene glycol diesters in the preparation of propylene oxide
BAYER AG3 citations59