Hoecht Aktiengesellschaft
11Patents
0Active
11Granted
31Portfolio score
Filing activity: Apr 4, 1985 → Apr 7, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5716698A | Peelable, heat-sealable, multilayer polyolefinic film, process for the production thereof, and the use thereof | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5800913A | Heat-sealable, white-opaque, biaxially oriented, multi-layer polypropylene film, process for the production thereof, and the use thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4638053A | Process for the preparation of chlorozincate salts of benzo thiazolium azo dyestuffs by alkylating with dialkylsulfate in aqueous medium in the presence of Zn-containing acid acceptor at pH.ltoreq.7 | Chemistry; Metallurgy | 7 | Expired |
| US5708089A | Mixtures of fluoropolymers and oxidized polyarylene sulfides | Chemistry; Metallurgy | 7 | Expired |
| US4971835A | Processing for rendering leather hydrophobic and oleophobic by impregnation with fluoro chemicals | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5210323A | Process for the preparation of alkoxylates having a narrow distribution of homologs using antimony pentahalide complexes as the catalyst | Chemistry; Metallurgy | 5 | Expired |
| US5777156A | Carrier catalyst, process for the production therefor for the preparation of vinyl acetate | Chemistry; Metallurgy | 4 | Expired |
| US4620020A | Bis-phosphonium salts and process for making them | Chemistry; Metallurgy | 1 | Expired |
| US5668260A | Tetrakisazo Compounds, the method of preparation thereof and the process of pyeing | Chemistry; Metallurgy | 1 | Expired |
| US5104416A | Aqueous preparation of C.I. azoic diazo components with phosphoric acid, their preparation and use: diazotization and coupling on cellulose | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5719284A | Process for the preparation of substituted 3-arylquinazoline-2,4-diones | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.