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Inventor

Alfred J. Thelen

Inventor
Santa Rosa, CA, US

Overview

3→
Patents
1976–1989
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C23Cprimary
C23CCoating metallic material40%
G02BOptical elements, systems or apparatus20%
H01JElectric discharge tubes or discharge lamps20%
H04BTransmission20%
PatentTitleYear
4,885,070'Method and apparatus for the application of materials'19894,373,782'Non-polarizing thin film edge filter'19833,991,707'Vapor deposition apparatus with mask means'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1983Patents assigned to OPTICAL COATING LABORATORY INC (2)· patent assignee history
1976–1983Based in Santa Rosa, CA, US· patent location history
1989Patents assigned to LEYBOLD AG (1)· patent assignee history
1989Based in Wehrheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OPTICAL COATING LABORATORY INC21976–1983
LEYBOLD AG11989
Locations
LocationPatentsSpan
Santa Rosa, California, US21976–1983
Wehrheim, DE11989