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Inventor

Raymond Wieveg

Inventor
Ventura, CA, US

Overview

4→
Patents
1981–1990
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 as inventor

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

F23Gprimary
F23GCremation furnaces22%
F23MCasings, linings, walls or doors specially adapted for combustion chambers, e.g. firebridges22%
Y10TTechnical subjects covered by former us classification22%
E21BEarth or rock drilling11%
F16KValves11%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact11%
PatentTitleYear
4,915,038'Sudden expansion (SUE) incinerator for destroying hazardous materials and wastes and improved method'19904,785,748'Method sudden expansion (SUE) incinerator for destroying hazardous materials & wastes'19884,342,330'Ball type valve having improved redundant sealing system'19824,294,314'Inside blowout preventer well tool'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1982Patents assigned to HYDRIL CO (2)· patent assignee history
1981–1982Based in Los Angeles, CA, US· patent location history
1988–1990Patents assigned to MARQUARDT COMPANY (2)· patent assignee history
1988–1990Based in Ventura, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HYDRIL CO21981–1982
MARQUARDT COMPANY21988–1990
Locations
LocationPatentsSpan
Ventura, California, US21988–1990
Los Angeles, California, US21981–1982