Inventor

Arnold Alscher

Inventor

Essen, DE

Overview

6→

Patents

1979–1990

Patent span

Performing operations

Primary field (CPC B)

Patents· 6 as inventor

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

B27Kprimary

B27KProcesses, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for20%

A01NPreservation of bodies of humans or animals or plants or parts thereof10%

B63BShips or other waterborne vessels10%

B63JAuxiliaries on vessels10%

C04BLime, magnesia10%

C07CAcyclic or carbocyclic compounds10%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%

C10CWorking-up pitch, asphalt, bitumen, tar10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

PatentTitleYear

4,921,543'Liquifiers and their preparation'1990 4,871,443'Novel method for extraction of salts from coal tar and pitches'1989 4,744,321'Ship for the liquid transportation of high melting aromatic hydrocarbons'1988 4,718,943'Wood preserving impregnating oil and use thereof'1988 4,377,040'Process for the modification of wood'1983 4,149,019'Process for the transalkylation of nuclear methylated phenols'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1990Patents assigned to RUETGERSWERKE AG (4)· patent assignee history

1979Based in Krefeld, DE· patent location history

1983Based in Ladenburg, DE· patent location history

1988Patents assigned to VFT VERKAUFSGES TEER (2)· patent assignee history

1988–1990Based in Essen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RUETGERSWERKE AG	4	1979–1990
VFT VERKAUFSGES TEER	2	1988

Locations

Location	Patents	Span
Essen, DE	4	1988–1990
Ladenburg, DE	1	1983
Krefeld, DE	1	1979