Helmut Mach
49Patents
13h-index
63Co-inventors
84Inventor score
Filing activity: Jan 30, 1978 → Jun 30, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5112364A | Gasoline-engine fuels containing polyetheramines or polyetheramine derivatives | Mechanical Engineering; Lighting; Heating | 68 | Expired |
| US4859210A | Motor fuel or lubricant composition containing polybutyl or polyisobutyl derivatives | Chemistry; Metallurgy | 66 | Expired |
| US5191044A | Preparation of polyisobutene | Chemistry; Metallurgy | 44 | Expired |
| US5883196A | Preparation of polyalkenylsuccinic acid derivatives and their use as fuel and lubricant additives | Chemistry; Metallurgy | 31 | Expired |
| US7071275B2 | Polyisobutene and polyisobutene derivatives for use in lubricant compositions | Chemistry; Metallurgy | 31 | Expired |
| US6284716A | Copolymers and their reaction products with amines as fuel and lubricant additives | Chemistry; Metallurgy | 21 | Expired |
| US4339776A | Preprogrammable recording system with automatic warning of time limit | Physics | 17 | Expired |
| US4215376A | Circuit arrangement for the digital correction of time base errors of a television signal using variable addressing of a memory | Electricity | 16 | Expired |
| US4790957A | Polycarboxylic acid esters and lubricants containing these esters | Chemistry; Metallurgy | 16 | Expired |
| US5123932A | Motor fuel compositions containing alkoxylation products | Chemistry; Metallurgy | 15 | Expired |
| US5556932A | Chlorine-free, non-drying isobutene/diene copolymers and process for their preparation | Chemistry; Metallurgy | 13 | Expired |
| US7217773B2 | Method for producing polyisobutene | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6512055B2 | Copolymers and their reaction products with amines as fuel and lubricant additives | Chemistry; Metallurgy | 13 | Expired |
| US7001966B2 | Method for the production of isobutene polymers | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5929185A | Copolymers of alk-1-enes and .alpha., .omega.-dienes having a high viscosity index | Chemistry; Metallurgy | 6 | Expired |
| US9217115B2 | Use of tetrahydroberizoxazines as stabilisers | Chemistry; Metallurgy | 5 | Active |
| US6958382B2 | Polyisobutenyl ethers and thioethers | Chemistry; Metallurgy | 5 | Expired |
| US8409474B2 | Use of polynuclear phenolic compounds as stabilisers | Chemistry; Metallurgy | 5 | Active |
| US4822945A | Preparation of decene oligomers and use thereof as lubricating oils | Chemistry; Metallurgy | 4 | Expired |
| US6649695B1 | Elastic sealing material on the basis of block copolymers made of isobutene and vinyl aromatic monomers | Fixed Constructions | 4 | Expired |
| US5053154A | Use of adducts of 1,2-butylene oxide with H-azidic organic compounds as lubricants, and lubricants containing these adducts | Chemistry; Metallurgy | 4 | Expired |
| US5145948A | Preparation of highly viscous adducts of butylene oxide with alcohols | Chemistry; Metallurgy | 3 | Expired |
| US5976202A | Reaction products of polyolefins with vinyl esters and their use as fuel and lubricant additives | Chemistry; Metallurgy | 3 | Expired |
| US8263535B2 | Method for producing polyalkenyl succinimide products, novel polyalkenylsuccinimide products with improved properties, intermediate products | Chemistry; Metallurgy | 3 | Active |
| US5266647A | Branched copolymers | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.