Walter Dursch
24Patents
8h-index
18Co-inventors
68Inventor score
Filing activity: Aug 29, 1975 → Jul 14, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4069245A | Preparation of phosphonic and/or phosphinic acids | Chemistry; Metallurgy | 19 | Expired |
| US4585845A | Phosphonic acid cross-linked hydrophilic copolymers | Chemistry; Metallurgy | 17 | Expired |
| US4749758A | Process for the preparation of copolymers of vinylphosphonic acid and (meth) acrylic acid in aqueous solution | Chemistry; Metallurgy | 17 | Expired |
| US4696987A | Process for the preparation of polymers of vinylphosphonic acid in protic solvents | Chemistry; Metallurgy | 11 | Expired |
| US4743666A | Water-soluble copolymers with pendant phosphonic, sulphonic and amide groups | Chemistry; Metallurgy | 11 | Expired |
| US4388252A | Process for the manufacture of vinyl phosphonic acid derivatives | Chemistry; Metallurgy | 11 | Expired |
| US4267125A | Process for the manufacture of phosphinic and phosphonic acid anhydrides | Chemistry; Metallurgy | 11 | Expired |
| US4195035A | Alkane-bisalkyl-phosphinic anhydrides and process for the manufacture of alkane-phosphonic anhydrides and alkane-bis alkyl-phosphinic anhydrides | Chemistry; Metallurgy | 8 | Expired |
| US4401471A | Inorganic cellular material and process for the manufacture thereof | Chemistry; Metallurgy | 7 | Expired |
| US4493803A | Process for the preparation of vinylphosphonic acid diesters and vinylphosphonic acid | Chemistry; Metallurgy | 7 | Expired |
| US4096208A | Polyphosphinites and a process for their preparation | Chemistry; Metallurgy | 6 | Expired |
| US4314052A | Polyester which is soluble or dispersible in water, a process for its preparation and its use as a levelling auxiliary, levelling auxiliaries and processes for uniform dyeing | Textiles; Paper | 5 | Expired |
| US4284410A | Process for the pretreatment of cellulose fibers to be printed according to the thermotransfer printing method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4016222A | Unsaturated phosphorus compounds | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4244893A | Polyphosphorus compounds obtained by reacting an alcohol, phosphorus anhydride and an oxalkylating agent | Chemistry; Metallurgy | 4 | Expired |
| US4072776A | Process for the flameproofing of textile materials | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4220610A | Organic phosphorus compounds with 2-hydroxyalkyl-phosphonic acid groups | Chemistry; Metallurgy | 3 | Expired |
| US4426336A | Process for the preparation of vinylphosphonic acid derivatives and the use thereof | Chemistry; Metallurgy | 3 | Expired |
| US4250124A | Organic phosphorus compounds possessing 3-hydroxyalkylphosphinic acid ester groups | Textiles; Paper | 2 | Expired |
| US4163034A | Polyphosphinites and a process for their preparation | Chemistry; Metallurgy | 1 | Expired |
| US4548762A | Process for the preparation of vinylphosphonic acid dichloride and 2-chloroethanephosphonic acid dichloride | Chemistry; Metallurgy | 1 | Expired |
| US4709086A | Process for the preparation of 4-benzyl aspartate | Chemistry; Metallurgy | 1 | Expired |
| US4196141A | Bisphosphinic acid anhydrides and process for their preparation | Chemistry; Metallurgy | 1 | Expired |
| US4173601A | Carbamoyl-oxyalkyl-phosphinic acid derivatives | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.