Deutsche Texaco Aktiengesellschaft
100Patents
0Active
100Granted
41Portfolio score
Filing activity: Jun 16, 1972 → Mar 17, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4252191A | Method of recovering petroleum and bitumen from subterranean reservoirs | Fixed Constructions | 295 | Expired |
| US4042026A | Method for initiating an in-situ recovery process by the introduction of oxygen | Fixed Constructions | 279 | Expired |
| US4390973A | Method for determining the extent of subsurface reaction involving acoustic signals | Physics | 173 | Expired |
| US3994983A | Process for the production of lower alcohols by direct catalytic hydration lower olefins | Chemistry; Metallurgy | 49 | Expired |
| US4244906A | Process for making phenol-aldehyde resins | Chemistry; Metallurgy | 34 | Expired |
| US4544776A | Process for separating methanol from the reaction products obtained in the etherification of C.sub.4 through C.sub.7 isoolefins with methanol | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4943354A | Process for the continuous separation of water from methyl tert-butyl ether mixtures | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4549813A | Apparatus for mixing a solution | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4098839A | Oligomerization of unsaturated hydrocarbons with a molybdenum catalyst | Chemistry; Metallurgy | 21 | Expired |
| US4138348A | Lubricant for use in non-chip metal forming | Chemistry; Metallurgy | 19 | Expired |
| US4579984A | Process for the production of alcohols | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4468761A | Noise suppression method | Physics | 16 | Expired |
| USD247134S | Gasoline pump | General | 15 | Expired |
| US4006165A | Process for converting maleic anhydride to .gamma.-butyrolactone | Performing Operations; Transporting | 15 | Expired |
| US4340769A | Process for the continuous production of lower aliphatic alcohols | Performing Operations; Transporting | 13 | Expired |
| US4115282A | Biodegradable grease composition | Chemistry; Metallurgy | 13 | Expired |
| US4042910A | Method of seismic exploration | Physics | 13 | Expired |
| US4144208A | Cold cross-linking dispersion adhesive | Chemistry; Metallurgy | 12 | Expired |
| US4214475A | Adapter for a sensitive viscometer | Physics | 11 | Expired |
| US4760202A | Process for the production of tertiary alcohols | Chemistry; Metallurgy | 9 | Expired |
| US4212794A | Aqueous drilling fluid | Chemistry; Metallurgy | 9 | Expired |
| US4456776A | Process for the production of a lower aliphatic alcohol | Chemistry; Metallurgy | 9 | Expired |
| US4525282A | Method of loading and/or transferring environmentally harmful materials in shallow-water and mudland regions and artificial islands suitable therefor | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4396787A | Process for the thermal dimerization of butadiene | Chemistry; Metallurgy | 8 | Expired |
| US4476333A | Process for the continuous production of secondary butyl alcohol | Chemistry; Metallurgy | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.