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Inventor

Hans Pfeiffer

Inventor
Haan, DE

Overview

4→
Patents
1977–1989
Patent span
Human necessities
Primary field (CPC A)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
A01NPreservation of bodies of humans or animals or plants or parts thereof10%
A23KFodder10%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for10%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations10%
C11DDetergent compositions10%
C12NMicroorganisms or enzymes10%
C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing10%
Y02ATechnologies for adaptation to climate change10%
PatentTitleYear
4,820,517'Process for obtaining a pepper extract with insecticidal activity'19894,260,686'Process for the enzymatic softening of furs'19814,142,999'Stabilized liquid enzyme containing compositions'19794,062,732'Process of producing acid stable protease'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1989Patents assigned to HENKEL KGAA (4)· patent assignee history
1977–1989Based in Haan, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HENKEL KGAA41977–1989
Locations
LocationPatentsSpan
Haan, DE41977–1989