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Inventor

Joachim Weitzel

Inventor
Darmstadt, DE

Overview

4→
Patents
1997–2003
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.

C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers17%
A61KPreparations for medical, dental or toiletry purposes13%
A61QSpecific use of cosmetics or similar toiletry preparations13%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds13%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties13%
C03CChemical composition of glasses, glazes or vitreous enamels9%
C04BLime, magnesia4%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%
F24SSolar heat collectors4%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%
PatentTitleYear
6,602,340'Transparent medium with angular-selective transmitting or reflecting properties'20036,551,397'Pigment preparation'20035,753,026'Process for the preparation of inclusion pigments'19985,672,200'Pigment preparation and its use'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2003Patents assigned to MERCK PATENT GMBH (4)· patent assignee history
1997–2003Based in Darmstadt, DE· patent location history
2003Based in Savannah, GA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MERCK PATENT GMBH41997–2003
Locations
LocationPatentsSpan
Darmstadt, DE31997–2003
Savannah, Georgia, US12003