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Inventor

Leewellyn C. Fischer

Inventor
Los Angeles, CA, US

Overview

2→
Patents
1976–2021
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G03Cprimary
G03CPhotosensitive materials for photographic purposes50%
LOC0950%
PatentTitleYear
D0915879Box for cosmetics20213,933,498'Fogged, direct positive silver halide emulsions containing a bleach inhibiting compound and a Dmin maintainer compound'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to DU PONT (1)· patent assignee history
1976Based in Fairport, NY, US· patent location history
2021Patents assigned to FISCHER LIDA DJARAR (1)· patent assignee history
2021Patents assigned to FISCHER ROBIJN (1)· patent assignee history
2021Based in Los Angeles, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DU PONT11976
FISCHER LIDA DJARARself12021
FISCHER ROBIJN12021
Locations
LocationPatentsSpan
Los Angeles, California, US12021
Fairport, New York, US11976