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Inventor

Ernest C. Wettstein

Inventor
Acton, MA, US

Overview

5→
Patents
1977–1999
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H01Fprimary
H01FMagnets40%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
Y10TTechnical subjects covered by former us classification20%
C23CCoating metallic material10%
G02BOptical elements, systems or apparatus10%
PatentTitleYear
6,008,834'Bouncing ball scanner'19994,628,809'Radial orientation rare earth-cobalt magnet rings'19864,533,407'Radial orientation rare earth-cobalt magnet rings'19854,297,388'Process of making permanent magnets'19814,056,800'Magnetic field aligning means'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to RAYTHEON CO (1)· patent assignee history
1977–1986Based in Acton, MA, US· patent location history
1981–1986Patents assigned to DRAPER LAB CHARLES S (3)· patent assignee history
1999Patents assigned to POLAROID CORP (1)· patent assignee history
1999Based in Framingham, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DRAPER LAB CHARLES S31981–1986
POLAROID CORP11999
RAYTHEON CO11977
Locations
LocationPatentsSpan
Acton, Massachusetts, US41977–1986
Framingham, Massachusetts, US11999