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Inventor

Helmut Hartner

Inventor
Dirmstein, DE

Overview

4→
Patents
1990–2017
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 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 for31%
A01NPreservation of bodies of humans or animals or plants or parts thereof23%
C08LCompositions of macromolecular compounds15%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
C09DCoating compositions, e.g. paints, varnishes or lacquers8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
9,808,954'Composition of a timber formulation comprising Cu salts and organic cyclic ingredients for the preservation of timber for decks'20176,506,795'Wood preservatives'20035,304,237'Chromium-free wood preservatives'19944,970,201'Preservatives for cellulose containing products'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1994Patents assigned to RUETGERSWERKE AG (2)· patent assignee history
1990–1994Based in Weinheim, DE· patent location history
2003Patents assigned to WEYL GMBH (1)· patent assignee history
2003–2017Based in Dirmstein, DE· patent location history
2017Patents assigned to RUTGERS ORGANICS GMBH (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RUETGERSWERKE AG21990–1994
RUTGERS ORGANICS GMBH12017
WEYL GMBH12003
Locations
LocationPatentsSpan
Dirmstein, DE22003–2017
Weinheim, DE21990–1994