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Frankfurt am Main, Germany

Ernst Hoyer

USPTO Granted Patents = 18

Average Co-Inventor Count = 2.5

ph-index = 8

Forward Citations = 146(Granted Patents)

Company Filing History:

18 out of 6,662

Hoechst Aktiengesellschaft

Years Active: 1976-1990

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4939243 - Water-soluble copper complex disazo compounds containg a chloro (1990-07-03),

2. 4916215 - Water-soluble disazo compounds containing substituted triazinyl radical, (1990-04-10),

3. 4730038 - Water-soluble disazo compounds of 1-amino-8-naphthal-3,6- or (1988-03-08),

4. 4622390 - Water-soluble disazo compounds containing an amino naphthol-disulfonic (1986-11-11),

5. 4492654 - Water-soluble azo compounds, a process for their preparation and their (1985-01-08),

6. 4485041 - Water-soluble metal free or copper (1984-11-27),

7. 4378312 - Water-soluble azo dyestuffs (1983-03-29),

8. 4370145 - Copper formazan compounds, processes for their preparation and their use (1983-01-25),

9. 4336190 - Copper complex formazan compounds, process for their manufacture and (1982-06-22),

10. 4334076 - Process for the preparation of sulfuric acid semiester ethylsulfonyl (1982-06-08),

11. 4323497 - Water-soluble disazo dyestuffs (1982-04-06),

12. 4315865 - Process for the production of sulfuric acid semiester compounds by (1982-02-16),

13. 4293306 - Process for the dyeing and printing of hydrophobic synthetic organic (1981-10-06),

14. 4242258 - Water-soluble dyestuffs, processes for their manufacture, their use as (1980-12-30),

15. 4191703 - Process for the manufacture of sulfuric acid semi-ester compounds (1980-03-04),

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