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Erftstadt, Germany

Hermann Niermann

This inventor holds 9 USPTO granted patents. Top assignee: Hoechst Aktiengesellschaft. Active years: 1978-1988.

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 19(Granted Patents)

Location History:

Erftstadt Bliesheim, DE (1978)
Erfstadt, DE (1983)
Erftstadt, DE (1979 - 1988)

Company Filing History:

Hoechst Aktiengesellschaft

Years Active: 1978-1988

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4732745 - Process for making phosphorus pentasulfide (1988-03-22),

2. 4520631 - Method for controlling and optionally regulating the level of liquid (1985-06-04),

3. 4473538 - Process for removing molten phosphorus pentsulfide from a reactor (1984-09-25),

4. 4419104 - Preparing P.sub.2 S.sub.5 of low reactivity (1983-12-06),

5. 4396581 - Apparatus for making phosphorus pentasulfide (1983-08-02),

6. 4386503 - Method and apparatus for controlling and optionally regulating the level (1983-06-07),

7. 4248602 - Production of phosphorus pentasulfide of predetermined reactivity (1981-02-03),

8. 4173621 - Process for improving the reactivity of phosphorus pentasulfide (1979-11-06),

9. 4097583 - Process for the production of phosphorus pentasulfide (1978-06-27),

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