Gerhard Langstein
19Patents
7h-index
54Co-inventors
69Inventor score
Filing activity: Nov 26, 1991 → May 3, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5554689A | Combinations of polyorganosiloxanes and fluororubbers containing double bonds by Si-H addition | Chemistry; Metallurgy | 18 | Expired |
| US5539065A | Process for the production of C.sub.4 -C.sub.16 alkyl rubbers using the slurry process | Chemistry; Metallurgy | 12 | Expired |
| US5214115A | Uncrosslinked copolymers containing reactive double bonds of fluorine monomers and unconjugated dienes and a process for their production | Chemistry; Metallurgy | 12 | Expired |
| US5543479A | Process for the production of polyisoolefins | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7446151B2 | Process for production of high-isoprene butyl rubber | Chemistry; Metallurgy | 11 | Active |
| US6015841A | Initiator systems containing vanadium tetrachloride for the (co)polymerization of isoolefins | Chemistry; Metallurgy | 8 | Expired |
| US5587424A | Mixture of fluorocarbon rubber and silicone/acrylate core/shell rubber | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6156859A | Process for producing highly branched polyisoolefins | Chemistry; Metallurgy | 7 | Expired |
| US5247036A | Non-crosslinked polymers, containing reactive double bonds, of fluorinated monomers and alkenyl (iso)-cyanurates | Chemistry; Metallurgy | 7 | Expired |
| US5703182A | Process for the production of polyisoolefins by means of novel metallocene type initiator systems | Chemistry; Metallurgy | 6 | Expired |
| US5668232A | Process for the production of polyisoolefins | Chemistry; Metallurgy | 6 | Expired |
| US6562916B2 | Process for the preparation of isoolefin copolymers | Chemistry; Metallurgy | 3 | Expired |
| US7282548B2 | Process for production of high-isoprene butyl rubber | Chemistry; Metallurgy | 2 | Expired |
| US6846885B2 | Process for the preparation of isoolefin copolymers | Chemistry; Metallurgy | 1 | Expired |
| US6545100B2 | Halogenated, high molecular weight, gel-free isobutene copolymers with elevated double bond contents | Chemistry; Metallurgy | 0 | Expired |
| US7256244B2 | Process for production of high-isoprene butyl rubber | Chemistry; Metallurgy | 0 | Expired |
| US6677421B2 | Process for the preparation of isoolefin copolymers | Chemistry; Metallurgy | 0 | Expired |
| US11905177B2 | Storage medium and method for separating, storing and transporting chlorine from chlorine-containing gases | Performing Operations; Transporting | 0 | Active |
| US8354028B2 | Method for separating an organic phase from an electrolyte-containing aqueous and organic phase | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.