Inventor

G. A. Horst Siewert

Inventor

Freigericht, DE

Overview

4→

Patents

1984–1997

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.

C22Cprimary

C22CAlloys38%

H01JElectric discharge tubes or discharge lamps25%

B29CShaping or joining of plastics13%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts13%

C04BLime, magnesia13%

PatentTitleYear

5,632,925'Ceramic or Modified silicone filled molding tools for high temperature processing'1997 4,882,022'Process and apparatus for sputter coating a gold alloy onto a substrate'1989 4,808,373'Multiple-substance alloy for targets of cathode sputtering apparatus'1989 4,466,940'Multicomponent alloy for sputtering targets'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1989Patents assigned to DEMETRON (2)· patent assignee history

1984–1989Patents assigned to LEYBOLD HERAEUS GMBH & CO KG (2)· patent assignee history

1984–1989Based in Freigericht, DE· patent location history

1989Patents assigned to LEYBOLD AG (1)· patent assignee history

1997Patents assigned to LOGIC TOOLS LLC (1)· patent assignee history

1997Based in San Diego, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DEMETRON	2	1984–1989
LEYBOLD HERAEUS GMBH & CO KG	2	1984–1989
LEYBOLD AG	1	1989
LOGIC TOOLS LLC	1	1997

Locations

Location	Patents	Span
Freigericht, DE	3	1984–1989
San Diego, California, US	1	1997