Klaus Berg
18Patents
10h-index
42Co-inventors
68Inventor score
Filing activity: Feb 18, 1988 → Apr 8, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5302774A | Process for the production of bisphenols | Chemistry; Metallurgy | 30 | Expired |
| US5395857A | Optimized ion exchanger beds for the synthesis of bisphenol A | Performing Operations; Transporting | 30 | Expired |
| US4943502A | Photosensitive recording material suited for use in electrophotography containing dihydroquinoline charge transport compounds | Physics | 26 | Expired |
| US5780690A | Bisphenol synthesis on modified ion-exchange resins using specially purified carbonyl compounds | Chemistry; Metallurgy | 22 | Expired |
| US5455282A | Process of regenerating sulfonic acid cation exchange resins with a mercaptoethylamine or thiazolidine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5269887A | Process for the purification of bisphenols | Chemistry; Metallurgy | 16 | Expired |
| US5210328A | Process for the preparation of substituted cycloalkylidene bisphenols | Chemistry; Metallurgy | 11 | Expired |
| US5545764A | Process for the continuous production of high purity bisphenol A | Chemistry; Metallurgy | 11 | Expired |
| US4902746A | Use of mixtures of polycarbonates and styrene polymers as substrates for optical storage media | Chemistry; Metallurgy | 10 | Expired |
| US5693697A | Flame-resistant polycarbonate moulding-compositions | Chemistry; Metallurgy | 10 | Expired |
| US4826634A | Fluorinated alkylamidosulphonates, their preparation, their use as flame retardants, and polycarbonate moulding compositions containing them | Chemistry; Metallurgy | 7 | Expired |
| US4873314A | Process for the production of polycarbonate solutions | Chemistry; Metallurgy | 5 | Expired |
| US6486363B1 | Process for the manufacture of bis(4-hydroxyaryl)alkanes | Chemistry; Metallurgy | 5 | Expired |
| US4980426A | Moulding compounds of polycarbonate mixtures having a high disperse solubility | Physics | 5 | Expired |
| US4874816A | Vinyl copolymers with grafted-on polycarbonate chains, their production and use | Chemistry; Metallurgy | 4 | Expired |
| US5004569A | Process for the production of carboxylic acid esters | Chemistry; Metallurgy | 3 | Expired |
| US5128437A | Polycarbonate from bi(tetrahydrofuran)di phenol | Chemistry; Metallurgy | 3 | Expired |
| US4954569A | Use of homopolycarbonates of 3,3'-dihydroxydiphenyl ether for modifying films of thermoplastics | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.