Inventor

Leo F. Johnson

Inventor

Bedminster, NJ, US

Overview

9→

Patents

1980–1996

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus25%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light25%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein17%

C23CCoating metallic material8%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%

G21KHandling of particles or ionising radiation not otherwise provided for8%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h108%

PatentTitleYear

5,488,624'Rare earth ion upconversion laser system'1996 5,299,215'Rare earth ion upconversion laser system'1994 5,182,759'Apparatus and method for pumping of a weakly absorbing lasant material'1993 4,460,434'Method for planarizing patterned surfaces'1984 4,372,641'Optical waveguide termination'1983 4,321,282'Surface gratings and a method of increasing their spatial frequency'1982 4,245,883'Electrochromic optical device'1981 4,240,693'Electro-optical device based on electroplating action'1980 4,241,109'Technique for altering the profile of grating relief patterns'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1983Patents assigned to BELL TELEPHONE LABOR INC (5)· patent assignee history

1980–1996Based in Bedminster, NJ, US· patent location history

1984Patents assigned to AT & T BELL LAB (1)· patent assignee history

1993–1996Patents assigned to AMOCO CORP (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BELL TELEPHONE LABOR INC	5	1980–1983
AMOCO CORP	3	1993–1996
AT & T BELL LAB	1	1984

Locations

Location	Patents	Span
Bedminster, New Jersey, US	9	1980–1996