Inventor
Alfred Coenen
Inventor
Maria Laach, DE
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Bprimary
C01BNon-metallic elements45%
C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium27%
B01DSeparation9%
C01GCompounds containing metals not covered by subclasses c01d or c01f9%
C07CAcyclic or carbocyclic compounds9%
PatentTitleYear
4,409,198'Process for the production of copper (II) chloride from copper (II) oxychloride using tertiary amine hydrochlorides'19834,337,234'Method for preparing sodium bicarbonate and hydrogen chloride'19824,321,247'Process for preparing sodium bicarbonate and hydrogen chloride'19824,320,106'Method for preparing sodium bicarbonate and hydrogen chloride'19824,305,917'Method for preparing ammonia and hydrogen chloride from ammonium chloride'19814,259,309'Method for obtaining gaseous hydrogen chloride from dilute aqueous hydrochloric acid'19814,255,356'Purification of tertiary amines using an adsorbent'19814,254,092'Method for separating hydrogen chloride and hydrogen bromide'19814,230,681'Method of manufacturing hydrogen chloride from solutions of amine hydrochlorides'19804,115,530'Process for obtaining gaseous hydrogen chloride from dilute, aqueous hydrochloric acid'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1983Patents assigned to HUELS CHEMISCHE WERKE AG (10)· patent assignee history
1978–1981Based in Marl, DE· patent location history
1981–1983Based in Maria Laach, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUELS CHEMISCHE WERKE AG | 10 | 1978–1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Maria Laach, DE | 5 | 1981–1983 |
| Marl, DE | 5 | 1978–1981 |