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Inventor

Rudolf Uchdorf

Inventor
Krefeld, DE

Overview

11→
Patents
1989–2009
Patent span
Chemistry
Primary field (CPC C)

Patents· 11 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds56%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds28%
Y02PClimate change mitigation technologies in the production or processing of goods11%
B01DSeparation6%
PatentTitleYear
7,528,283'Process for preparing diamines and polyamines from the diphenylmethane series'20097,312,362'Process for the production of di- and polyamines of the diphenylmethane series'20077,253,321'Process for the preparation of polyamines of the diphenylmethane series at a low degree of protonation'20076,649,798'Method for production of diaminodiphenylmethanes'20036,639,102'Process for producing polyisocyanates of the diphenyl methane series having a reduced color value'20035,359,141'Process for the production of polynuclear aromatic polyamines'19945,310,769'Process for the production of polyamine mixtures of the polyamino-polyaryl-polymethylene series'19945,196,591'Process for the production of polynuclear aromatic polyamines'19934,924,028'Process for the production of polynuclear aromatic polyamines'19904,914,236'Process for the preparation of multinuclear aromatic polyamines'19904,853,191'Process for the removal of sulfur-containing gases'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to BAYER BRASIL SA (1)· patent assignee history
1989–2007Based in Krefeld, DE· patent location history
1990–2003Patents assigned to BAYER AG (7)· patent assignee history
1994Patents assigned to MILES INC (1)· patent assignee history
2007Patents assigned to BAYER MATERIALSCIENCE AG (2)· patent assignee history
2007–2009Based in Shanghai, CN· patent location history
2009Patents assigned to BAYER METERIALSCIENCE AG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAYER AG71990–2003
BAYER MATERIALSCIENCE AG22007
BAYER BRASIL SA11989
BAYER METERIALSCIENCE AG12009
MILES INC11994
Locations
LocationPatentsSpan
Krefeld, DE91989–2007
Shanghai, CN22007–2009