Manfred Hajek
23Patents
11h-index
44Co-inventors
75Inventor score
Filing activity: Jun 2, 1975 → Mar 22, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4224417A | High molecular weight polyamines and their use in preparation of polyurethane resins | Chemistry; Metallurgy | 106 | Expired |
| US4428983A | Process for the production of microcapsules | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4002601A | Urethane oxazolidines | Chemistry; Metallurgy | 46 | Expired |
| US5010162A | Polycarbonate of alkyl cyclohexylidene bisphenol | Chemistry; Metallurgy | 27 | Expired |
| US4506086A | Process for the production of dianhydrohexitol mixtures and liquid mixture of dianhydrohexitols | Chemistry; Metallurgy | 23 | Expired |
| US4108842A | Preparation of polyurethane ureas using as hardeners mixtures of water, amines, aldimines and ketimines | Chemistry; Metallurgy | 22 | Expired |
| US4279793A | Water-hardenable mixtures | Chemistry; Metallurgy | 14 | Expired |
| US4404379A | Cycloaminals and a process for their preparation | Chemistry; Metallurgy | 12 | Expired |
| US4713389A | Fungicidally and bactericidally active acylated saccharin derivatives | Human Necessities | 12 | Expired |
| US4564645A | Process for the production of dianhydrohexitol mixtures and the production of polymers from such mixtures | Chemistry; Metallurgy | 11 | Expired |
| US4642344A | Polyamines | Chemistry; Metallurgy | 11 | Expired |
| US5210328A | Process for the preparation of substituted cycloalkylidene bisphenols | Chemistry; Metallurgy | 11 | Expired |
| US4619966A | Process for the production of coated substrates | Chemistry; Metallurgy | 8 | Expired |
| US4562289A | Homogeneous storage stable cyanamide solutions in polyols and a process for their production | Chemistry; Metallurgy | 8 | Expired |
| US5010163A | Polycarbonate of cycloalkylidene bisphenol | Chemistry; Metallurgy | 7 | Expired |
| US4683233A | Salts of 2-keto-2H, 3H-1,2-benzisothiazole 1,1-dioxide as microbicides | Human Necessities | 4 | Expired |
| US5434310A | Process for the preparation of acylbenzenes | Chemistry; Metallurgy | 3 | Expired |
| US5212280A | Polycarbonate from special dihydroxydiphenyl bicycloalkane | Chemistry; Metallurgy | 3 | Expired |
| US5276213A | Special dihydroxydiphenyl bicycloalkanes, their production and their use for the production of high molecular weight polycarbonates | Chemistry; Metallurgy | 3 | Expired |
| US4666930A | 3-hydrazono-benzisothiazole 1,1-dioxide fungicides | Chemistry; Metallurgy | 2 | Expired |
| US6242641A | Cycloaliphatic compounds | Chemistry; Metallurgy | 2 | Expired |
| US4028306A | Urea or carbonamide containing diisocyanate polyaddition products with phosphoric ester substituents | Chemistry; Metallurgy | 1 | Expired |
| US4667041A | Process for the preparation of 3-hydrazino-1,2-benz-isothiazole 1,1-dioxides | Human Necessities | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.