Inventor

Walter Frey

Inventor

Waterbury Center, VT, US

Overview

1976–2002

Patent span

Chemistry

Primary field (CPC C)

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

C07Cprimary

C07CAcyclic or carbocyclic compounds27%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry9%

C23CCoating metallic material9%

F25BRefrigeration machines, plants or systems9%

F25DRefrigerators9%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact9%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h109%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to BASF AG (3)· patent assignee history

1976Based in Mannheim, DE· patent location history

1977Based in Manheim, DE· patent location history

1978Based in Ludwigshafen, DE· patent location history

1982Patents assigned to FREY WALTER (1)· patent assignee history

1982Patents assigned to KAISER ROLF (1)· patent assignee history

1982Based in Esslingen, DE· patent location history

2002Patents assigned to IBM (1)· patent assignee history

2002Based in Waterbury Center, VT, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations