Inventor

Robert H. Elkins

Inventor

Hinsdale, IL, US

Overview

1976–2011

Patent span

General tagging of new technological developments

Primary field (CPC Y)

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

Y02Eprimary

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution23%

C01BNon-metallic elements15%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

C22CAlloys8%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys8%

F24HFluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general8%

G21CNuclear reactors8%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to AMERICAN GAS ASS (2)· patent assignee history

1976–1982Based in Hinsdale, IL, US· patent location history

1981Patents assigned to SOUTHERN CALIFORNIA GAS (1)· patent assignee history

1982Patents assigned to SOUTHERN CALIFORNIA GAS CO (1)· patent assignee history

2011Patents assigned to GLOBAL NUCLEAR FUEL AMERICAS (1)· patent assignee history

2011Based in Wilmington, NC, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AMERICAN GAS ASS	2	1976–1978
GLOBAL NUCLEAR FUEL AMERICAS	1	2011
SOUTHERN CALIFORNIA GAS	1	1981
SOUTHERN CALIFORNIA GAS CO	1	1982

Locations

Location	Patents	Span
Hinsdale, Illinois, US	4	1976–1982
Wilmington, NC, US	1	2011