P

Inventor

BLOCK HANS-DIETER

63 patents
⚠️ This page may combine multiple inventors who share the name “BLOCK HANS-DIETER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAYER AG

42 patents
US4415719ANov 15, 1983

Thermoplastic, branched aromatic polyphosphonates, and a process for their production

BAYER AG66 citations96
US4344855AAug 17, 1982

Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage

BAYER AG80 citations96
US4331614AMay 25, 1982

Aromatic polyphosphonates and a process for their production

BAYER AG76 citations96
US4294719AOct 13, 1981

Polyisocyanates which contain carbodiimide groups and which are stable in storage

BAYER AG81 citations96
US5216113AJun 1, 1993

Highly branched polyphosphonates

BAYER AG66 citations94
US5424474AJun 13, 1995

Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing hydroxyl and/or mercapto groups, a method for their preparation, and their use

BAYER AG26 citations92
US5414102AMay 9, 1995

Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing acrylate and/or methacrylate groups

BAYER AG27 citations92
US5127999AJul 7, 1992

Process for the preparation of alkali metal dichromates and chromic acid by electrolysis

BAYER AG22 citations92
US5964693AOct 12, 1999

Continuous preparation of silica sols which contain large particles

BAYER AG48 citations91
US4988748AJan 29, 1991

Flame-resistant thermoplastic polycarbonate molding compounds

BAYER AG33 citations91
US4377537AMar 22, 1983

Preparation of alkane phosphonic and phosphinic acid aryl esters

BAYER AG38 citations87
US5128000AJul 7, 1992

Dimensionally stable anodes and their use in the preparation of alkali metal dichromates and chromic acid

BAYER AG19 citations82
US4067820AJan 10, 1978

High molecular weight, insoluble carbodiimidization catalysts

BAYER AG22 citations82
US5258067ANov 2, 1993

Liquid for conditioning tooth or bone substance

BAYER AG9 citations74
US4257987AMar 24, 1981

Lower alkyl di propargyl phosphates

BAYER AG11 citations74
US4252857AFeb 24, 1981

Flameproofing substrate

BAYER AG9 citations74
US4102949AJul 25, 1978

Production of 3,4-dihydroxy phospholane oxides

BAYER AG9 citations74
US4080377AMar 21, 1978

Production of cyclic five-membered ring unsaturated phosphine dichlorides

BAYER AG7 citations74
US5682593AOct 28, 1997

Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate

BAYER AG10 citations73
US5181994AJan 26, 1993

Process for the preparation of chromic acid

BAYER AG11 citations73
US4028434AJun 7, 1977

Graft polymers of vinyl phosphonic acid esters

BAYER AG10 citations73
US4022757AMay 10, 1977

Dicarbamic acid diesters containing phosphorus

BAYER AG8 citations73
US5710307AJan 20, 1998

Process for the production of trialkyl phosphites

BAYER AG10 citations72
US5565615AOct 15, 1996

Method of preparing dimethylamine-borane

BAYER AG6 citations72
US5458812AOct 17, 1995

Process for the production and concentration of silica sols

BAYER AG19 citations72
US5273735ADec 28, 1993

Process for the preparation of sodium dichromate

BAYER AG9 citations72
US4246103AJan 20, 1981

Propane-1,3-diphosphonic acids for conditioning water

BAYER AG17 citations72
US5342986AAug 30, 1994

Fluorinated carboxylic acid esters of phosphonocarboxylic acids and phosphinocarboxylic acids and use thereof

BAYER AG17 citations71
US4827022AMay 2, 1989

Process for the preparation of dimethylmaleate

BAYER AG12 citations71
US5885485AMar 23, 1999

Process for producing low-salt silica sol dispersions in low-boiling alcohols

BAYER AG8 citations70
US5250274AOct 5, 1993

Process for the production of sodium dichromate

BAYER AG14 citations70
US4931586AJun 5, 1990

Process for the continuous production of 2-phosphone-butane-1,2,4-tricarboxylic acid and alkali metal salts thereof

BAYER AG10 citations65
US5411726AMay 2, 1995

Process for purifying hydrogen fluoride

BAYER AG6 citations63
US4491656AJan 1, 1985

Polyphosphates and process of preparation

BAYER AG3 citations63
US4080385AMar 21, 1978

Preparation of alkoxy phospholane oxides and sulphides

BAYER AG3 citations63
US4052484AOct 4, 1977

Substituted cyclic phosphine oxides

BAYER AG5 citations63
US5096548AMar 17, 1992

Process for the preparation of chromic acid

BAYER AG4 citations62
US5094729AMar 10, 1992

Processes for the preparation of alkali metal dichromates and chromic acid

BAYER AG2 citations62
US5051155ASep 24, 1991

Processes for the preparation of alkali metal dichromates and chromic acid

BAYER AG2 citations62
US4981573AJan 1, 1991

Process for the production of alkali dichromates and chromic acid employing an anode of valve metal activated by electrodepositing noble metals from melts

BAYER AG4 citations62
US4482693ANov 13, 1984

Polyphosphates and the production thereof

BAYER AG3 citations62
US5068015ANov 26, 1991

Electrochemical process for the production of chromic acid

BAYER AG5 citations61

SOLARWORLD AG

7 patents

AGFA GEVAERT AG

1 patent

Showing the top 50 of 63 patents by PatentIndex Score.