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Frankfurt, Germany

Hoechstaktiengesellschaft

USPTO Granted Patents = 19

Forward Citations = 91

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42 inventors (with patents filed for the assignee):

Werner Schwertfeger (1 out of 58 patents)

Hans-Harald Sedlacek (1 out of 38 patents)

Thomas Kissel (1 out of 4 patents)

4. Josef Holz (1 out of 16 patents)

5. Werner Thorwart (1 out of 22 patents)

6. Hans-Jerg Kleiner (1 out of 169 patents)

7. Helmut Scheckenbach (1 out of 25 patents)

8. Hans-Dieter Klenk (1 out of 2 patents)

9. Siegfried Weis (1 out of 4 patents)

10. Theodor Papenfuhs (1 out of 116 patents)

11. Rolf Muller (1 out of 5 patents)

12. Thomas Schach (1 out of 16 patents)

13. Axel Schonfeld (1 out of 12 patents)

14. Hans Millauer (1 out of 22 patents)

15. Bernd Scharbert (1 out of 10 patents)

19 patents: Sort by Forward Citations

1. 5916803 - Target cell-specific non-viral vectors for inserting genes into cells, (1999-06-29),

2. 5786397 - Foamable molding compositions (1998-07-28),

3. 5777156 - Carrier catalyst, process for the production therefor for the (1998-07-07),

4. 5714514 - 2-Cyano-3-mercaptocrotonamides (1998-02-03),

5. 5693819 - Process for the selective mono-ortho-hydroxyalkylation of 4-substituted (1997-12-02),

6. 5660187 - Process for preparing an intravaginal application system (1997-08-26),

7. 5644060 - Process for the preparation of 1-oxa-3,8-diaza-4-oxospiro[4.5]decane (1997-07-01),

8. 5518813 - Poly (1,4-cyclohexanedimethylene terephthalate) multifilament yarns for (1996-05-21),

9. 5391698 - Phosphoric acid polyesters and a process for their preparation (1995-02-21),

10. 5294742 - Process for preparing 3,5-difluoroaniline (1994-03-15),

11. 5283350 - Aryl esters of phosphonous halides and a process for the preparation (1994-02-01),

12. 5026463 - Process and apparatus for preparing the surface of a plastic molding by (1991-06-25),

13. 5024825 - Process for the preparation of dicalcium phosphate (1991-06-18),

14. 4788278 - Polyvinylene carbonate and polyhydroxymethylene, processes for their (1988-11-29),

15. 4775746 - Water-soluble monoazo compounds containing a fiber-reactive group of the (1988-10-04),

Hoechstaktiengesellschaft was a German chemical and pharmaceutical company, founded in 1863. It played a significant role in the development of the chemical industry in Germany and was known for its innovations in pharmaceuticals, plastics, and specialty chemicals. The company was a major player in the global market and underwent several transformations, including mergers and acquisitions. In the late 20th century, Hoechst merged with other companies, leading to the formation of Aventis. The legacy of Hoechst continues in the pharmaceutical and chemical sectors, with its contributions to research and development still recognized today.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

19 Patents

#46 in Frankfurt

#2,294 in Germany

#32,592 in the World

Frankfurt, Germany

Hoechstaktiengesellschaft

Forward Citations = 91

42 inventors:

Werner Schwertfeger (1 out of 58 patents)

Hans-Harald Sedlacek (1 out of 38 patents)

Thomas Kissel (1 out of 4 patents)

4. Josef Holz (1 out of 16 patents)

5. Werner Thorwart (1 out of 22 patents)

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