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Inventor

Elwin L. Rooy

Inventor
Pittsburgh, PA, US

Overview

5→
Patents
1987–1993
Patent span
Chemistry
Primary field (CPC C)

Patents· 5 as inventor

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

C22Cprimary
C22CAlloys45%
B41NPrinting plates or foils27%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys27%
PatentTitleYear
5,186,767'Lithoplate and method for making same'19934,902,353'Method for making lithoplate'19904,818,300'Method for making lithoplate'19894,793,971'Grain refining'19884,681,736'Aluminum alloy'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1993Patents assigned to ALUMINUM CO OF AMERICA (5)· patent assignee history
1987–1988Based in Franklin Park, PA, US· patent location history
1989–1993Based in Pittsburgh, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ALUMINUM CO OF AMERICA51987–1993
Locations
LocationPatentsSpan
Pittsburgh, Pennsylvania, US31989–1993
Franklin Park, Pennsylvania, US21987–1988