Inventor

John A. Stephens

Inventor

Boyds, MD, US

Overview

1976–1994

Patent span

Performing operations

Primary field (CPC B)

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

B01Fprimary

B01FMixing, e.g. dissolving, emulsifying or dispersing13%

B03BSeparating solid materials using liquids or using pneumatic tables or jigs13%

C22BProduction and refining of metals13%

G06FElectric digital data processing13%

A01NPreservation of bodies of humans or animals or plants or parts thereof7%

A47GHousehold or table equipment7%

B64CAeroplanes7%

C04BLime, magnesia7%

C07CAcyclic or carbocyclic compounds7%

G02BOptical elements, systems or apparatus7%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1977–1978Patents assigned to ANACONDA CO (2)· patent assignee history

1977–1978Based in Tucson, AZ, US· patent location history

1977Based in Aberdeen, MD, US· patent location history

1978–1985Patents assigned to STEPHENS JOHN A (2)· patent assignee history

1978Patents assigned to BENVAU EUGENE H (1)· patent assignee history

1978Patents assigned to BENVAU LEE R (1)· patent assignee history

1978Based in Santa Barbara, CA, US· patent location history

1985Based in Sydney, AU· patent location history

1993–1994Patents assigned to IBM (2)· patent assignee history

1993–1994Based in Boyds, MD, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations