Ernst Spietschka - Wissenschaftliche Veröffentlichungen

(1 - 6 von 6

)

US Patent for Process for preparing 1,3,6,8-tetrabromopyrene Patent...

patents.justia.com

Inventors: Siegfried Schiessler (Bad Soden am Taunus), Ernst Spietschka (Idstein) Primary Examiner: J. E. Evans Assistant Examiner: Joseph ...

US Patent for Process for the manufacture of the gamma-crystal...

patents.justia.com

Assignee: Hoechst Aktiengesellschaft (Frankfurt) Inventors: Adolf Kroh (Selters), Otto Fuchs (Frankfurt am Main), Ernst Spietschka (Idstein)

US Patent for Process for the preparation of...

patents.justia.com

Assignee: Hoechst Aktiengesellschaft (Frankfurt am Main) Inventors: Ernst Spietschka (Idstein), Helmut Troster (Konigstein) Primary Examiner: Alan L. Rotman

US Patent for Process for the preparation of pigments of the...

patents.justia.com

Inventors: Ernst Spietschka (Idstein), Manfred Urban (Wiesbaden) Primary Examiner: Mark L. Berch Law Firm: Curtis, Morris & Safford Application Number:

US Patent for Mix-crystal pigments based on perylenetetracarbimides,...

patents.justia.com

Date of Patent: Oct 13, Assignee: Hoechst Aktiengesellschaft (Frankfurt am Main) Inventors: Ernst Spietschka (Idstein/Taunus), Helmut Troster (Konigstein/Taunus) Primary Examiner: William R. Dixon, Jr. Assistant Examiner: Scott L. Hertzog Attorney, Agent or Firm: Connolly and Hutz Application Number: ,

US Patent for Thio-indigo dyestuffs Patent (Patent # 4,284,

patents.justia.com

Inventors: Ernst Spietschka (Idstein), Manfred Urban (Wiesbaden) Primary Examiner: John D. Randolph Attorney, Agent or Firm: Curtis, Morris & Safford

Verwandte Suchanfragen zu Ernst Spietschka

Helmut Troster

Personen
Vorname "Ernst" (19108)
Name "Spietschka" (5)

sortiert nach Relevanz / Datum

Erweiterte Suche

Person-Suchen: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Wissenschaftliche Veröffentlichungen Ernst Spietschka

US Patent for Process for preparing 1,3,6,8-tetrabromopyrene Patent...

US Patent for Process for the manufacture of the gamma-crystal...

US Patent for Process for the preparation of...

US Patent for Process for the preparation of pigments of the...

US Patent for Mix-crystal pigments based on perylenetetracarbimides,...

US Patent for Thio-indigo dyestuffs Patent (Patent # 4,284,