Gerhard Buttner
18Patents
7h-index
20Co-inventors
66Inventor score
Filing activity: Mar 1, 1974 → Jun 3, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4783815A | Manufacturing miniature hearing aid having a multi-layer circuit arrangement | Emerging Cross-Sectional Technologies | 76 | Expired |
| US4710961A | Miniature hearing aid having a bindable multi-layered amplifier arrangement | Electricity | 43 | Expired |
| US4790743A | Method of reducing the nox-emissions during combustion of nitrogen-containing fuels | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4783816A | Hearing aid to be worn behind the ear having battery and volume control facing in opposite directions | Electricity | 24 | Expired |
| US6179104A | Self-winding cable reel | Performing Operations; Transporting | 12 | Expired |
| US4551090A | Burner | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4321204A | Preparation of certain 2-methyl-2,3-dihydro-benzofuran-7-ols | Chemistry; Metallurgy | 7 | Expired |
| US4079090A | Preparation of trichloromethyl-trifluoro methyl-benzenes | Chemistry; Metallurgy | 5 | Expired |
| US4093669A | Method for preparing trichloromethyl-trifluoromethyl-benzenes | Chemistry; Metallurgy | 4 | Expired |
| US3932406A | 2-Trifluoromethylimino-1,3-dithiolo [4,5-b]-quinoxalines | Chemistry; Metallurgy | 4 | Expired |
| US4243584A | Monoazo dyestuffs containing diazo component substituted by disulfimide and trifluoromethyl groups | Chemistry; Metallurgy | 2 | Expired |
| US4059402A | Transfer printing process | Chemistry; Metallurgy | 1 | Expired |
| US4383126A | Preparation of monoalkyl ethers of hydroxyphenols | Chemistry; Metallurgy | 1 | Expired |
| US3983172A | Bis-halogen carbonyl anilines and process for the production | Chemistry; Metallurgy | 0 | Expired |
| US4159265A | Phenylazopyrazolo dyestuffs including disulfimide substituent | Chemistry; Metallurgy | 0 | Expired |
| US3979411A | 2-Trifluoromethylimino-benzo-heterocyclic compounds | Chemistry; Metallurgy | 0 | Expired |
| US4647676A | Process for the isolation of 2,2-dimethyl-7-hydroxy-coumaran | Chemistry; Metallurgy | 0 | Expired |
| US4486611A | Isolation of dihydroxybenzene-monoethers from reaction mixtures | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.