Inventor

Hans-Ulrich Hofs

Inventor

Krefeld, DE

Overview

7→

Patents

1990–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 7 as inventor

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

C01Pprimary

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds25%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties25%

C01BNon-metallic elements13%

C01GCompounds containing metals not covered by subclasses c01d or c01f8%

C04BLime, magnesia4%

C09DCoating compositions, e.g. paints, varnishes or lacquers4%

C22BProduction and refining of metals4%

C30BSingle-crystal growth4%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation4%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%

PatentTitleYear

6,294,726'Silicon with structured oxygen doping, its production and use'2001 5,185,141'Process for the production of iron oxide yellow pigments'1993 5,108,508'Rutile mixed phase pigment microgranulates, a process for their preparation and their use'1992 5,049,195'Color pure iron oxide pigments, a process for their preparation and their use'1991 5,032,377'Chromium oxide green, a process for its production and its use'1991 4,957,562'Chrome oxide green, a process for its preparation and its use'1990 4,911,760'Color pure iron oxide pigments, a process for their preparation'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2001Patents assigned to BAYER AG (7)· patent assignee history

1990–2001Based in Krefeld, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	7	1990–2001

Locations

Location	Patents	Span
Krefeld, DE	7	1990–2001