Stephan Huffer
28Patents
7h-index
95Co-inventors
72Inventor score
Filing activity: Dec 4, 1996 → Jan 16, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6683126B2 | Compositions for producing difficult-to-wet surface | Emerging Cross-Sectional Technologies | 87 | Expired |
| US5744567A | Random propylene copolymers | Chemistry; Metallurgy | 17 | Expired |
| US6013742A | Process for producing improved random propylene copolymers | Chemistry; Metallurgy | 14 | Expired |
| US8697834B2 | Polyalkylenepolyamines by homogeneously catalyzed alcohol amination | Chemistry; Metallurgy | 11 | Active |
| US6200922A | Catalyst systems of the Ziegler-Natta type | Chemistry; Metallurgy | 11 | Expired |
| US5773516A | Propylene polymers | Chemistry; Metallurgy | 9 | Expired |
| US7022795B1 | Highly crystalline propylene homopolymers | Chemistry; Metallurgy | 8 | Expired |
| US6730753B2 | Catalyst systems of the ziegler-natta type and a process for preparing them | Chemistry; Metallurgy | 7 | Expired |
| US6524995B2 | Catalyst systems of the Ziegler-Natta type | Chemistry; Metallurgy | 5 | Expired |
| US6495634B2 | Propylene polymers | Chemistry; Metallurgy | 5 | Expired |
| US6783807B2 | Method for coating apparatuses and parts of apparatuses for the construction of chemical installations | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6107231A | Ziegler-Natta catalyst systems modified during their preparation | Chemistry; Metallurgy | 4 | Expired |
| US9228148B2 | Method for producing molded bodies from sheet steel galvanized on one or both sides | Emerging Cross-Sectional Technologies | 3 | Active |
| US5773535A | Ziegler-natta catalyst systems containing specific organosilicon compounds | Chemistry; Metallurgy | 3 | Expired |
| US6852808B2 | Method for producing homopolymers and copolymers of isobutene | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6509103B1 | Method for coating reactors for high pressure polymerization of 1-olefins | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6156691A | Ziegler-Natta catalyst systems modified during their preparation | Chemistry; Metallurgy | 2 | Expired |
| US6513581B1 | Heat exchanger with a reduced tendency to produce deposits and method for producing same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6617047B1 | Method for coating apparatuses and parts of apparatuses used in chemical manufacturing | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6733549B2 | Fuel-water emulsions containing polybutene-based emulsifying agents | Chemistry; Metallurgy | 2 | Expired |
| US10150712B2 | Compositions with improved urease-inhibiting effect comprising (thio)phosphoric acid triamide and further compounds | Chemistry; Metallurgy | 2 | Active |
| US7132488B2 | Method for producing homopolymers and copolymers of isobutene | Chemistry; Metallurgy | 2 | Expired |
| US8211550B2 | Compounds and their use for producing leather and as dispersants | Emerging Cross-Sectional Technologies | 0 | Active |
| US11666050B2 | Enhancing the antimicrobial activity of biocides with polymers | Chemistry; Metallurgy | 0 | Active |
| US8771374B2 | Method for the production of leather, copolymers that are suitable therefor, and further uses thereof | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.