Inventor

Helmut David

Inventor

Oberhausen, DE

Overview

1989–1991

Patent span

Mechanical engineering

Primary field (CPC F)

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

F28Dprimary

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact18%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application18%

C10JProduction of producer gas, water-gas, synthesis gas from solid carbonaceous material, or mixtures containing these gases9%

F16LPipes9%

F22BMethods of steam generation9%

F22GSuperheating of steam9%

G21CNuclear reactors9%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1989–1991Patents assigned to GUTEHOFFNUNGSHUETTE MAN (3)· patent assignee history

1989–1991Based in Oberhausen, DE· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GUTEHOFFNUNGSHUETTE MAN	3	1989–1991

Locations

Location	Patents	Span
Oberhausen, DE	3	1989–1991