Inventor
BITTNER FRIEDRICH
DE22 patents
⚠️ This page may combine multiple inventors who share the name “BITTNER FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DEGUSSA
21 patentsUS4640832AFeb 3, 1987
Process for the production of sodium polysulfides from the elements sodium and sulfur
DEGUSSA20 citations80
US4391987AJul 5, 1983
Process for the production of aqueous sodium methioninate solutions
DEGUSSA7 citations72
US4391988AJul 5, 1983
Process for the production of aqueous sodium methioninate solutions
DEGUSSA8 citations72
US4377344AMar 22, 1983
Apparatus for bringing liquids in contact
DEGUSSA15 citations72
US5039643AAug 13, 1991
Method for the production of catalytically active coatings for the production of hydrogen cyanide
DEGUSSA18 citations71
US5039506AAug 13, 1991
Method of preparing NA2S (I)
DEGUSSA7 citations71
US4629617ADec 16, 1986
Method for the preparation of hydrogen sulfide
DEGUSSA7 citations70
US5250280AOct 5, 1993
Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions
DEGUSSA18 citations68
US4320104AMar 16, 1982
Process for the production of hydrogen cyanide
DEGUSSA4 citations62
US4281123AJul 28, 1981
Process for introducing three substituents in cyanuric chloride
DEGUSSA6 citations62
US4275203AJun 23, 1981
Process for the production of chloro-amino-s-triazines
DEGUSSA3 citations62
US4271297AJun 2, 1981
Process for the production of suspension or solutions of cyanuric chloride in organic solvents (I)
DEGUSSA5 citations62
US4017413AApr 12, 1977
Process for the production of solutions or suspensions of cyanuric chloride in aqueous organic solvents
DEGUSSA6 citations62
US5080881AJan 14, 1992
Method of preparing lower sodium polysulfides from higher sodium polysulfides and sodium
DEGUSSA5 citations60
US5075098ADec 24, 1991
Method of preparing Na2 S (II)
DEGUSSA2 citations60
US5039505AAug 13, 1991
Method of preparing Na2 S (III)
DEGUSSA2 citations60
US4271298AJun 2, 1981
Process for the production of suspensions or solutions of cyanuric chloride in water
DEGUSSA4 citations57
US4328010AMay 4, 1982
Process for the recovery of pure cyanogen chloride
DEGUSSA5 citations56
US4271299AJun 2, 1981
Process for the production of 2-alkoxy-4,6-dichloro-s-triazines
DEGUSSA1 citations51
US4269979AMay 26, 1981
Process for the production of suspension or solution of cyanuric chloride in organic solvents (II)
DEGUSSA0 citations41
US4259487AMar 31, 1981
Process for the production of optionally substituted 2-mercapto-4,6-di-chloro-s-triazines
DEGUSSA0 citations41