Inventor

Virgil W. Westdale

Inventor

Barrington, IL, US

Overview

1978–1986

Patent span

Physics

Primary field (CPC G)

Patents· 15 as inventor

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

G03Gprimary

G03GElectrography65%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%

Y10TTechnical subjects covered by former us classification17%

PatentTitleYear

4,612,273'Pressure fixing a single component toner with polyamide-rosin'1986 4,612,269'Method of fabricating a lithographic master'1986 4,612,272'Pressure fixing a single component toner with polyamide-rosin'1986 4,514,077'Magnetic toner developing device'1985 4,430,413'Method of making a single component toner'1984 4,430,403'Method of preparing a lithographic printing master'1984 4,430,407'Heat fusible single component toner having a polyamide binder'1984 4,419,959'Magnetic toner retainer means'1983 4,355,088'Polyethylene pressure fixable electroscopic printing powder and pressure fixing method'1982 4,248,954'Coated carrier particles for use in electrophotographic process'1981 4,248,950'Electrostatic developer mix containing either MoS.sub.2, TiS.sub.2, WS.sub. 2'1981 4,167,411'Method for making reproductions of a graphic original from a high output electrostatic reproduction equipment'1979 4,093,459'Treated carrier particles used in electrophotographic process'1978 4,073,980'Chemically treated carrier particles for use in electrophotography'1978 4,068,017'Coated carrier particles for use in electrophotographic process'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to ADDRESSOGRAPH MULTIGRAPH (3)· patent assignee history

1978–1981Based in Chagrin Falls, OH, US· patent location history

1979–1986Patents assigned to AM INT (12)· patent assignee history

1982–1986Based in Barrington, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AM INT	12	1979–1986
ADDRESSOGRAPH MULTIGRAPH	3	1978

Locations

Location	Patents	Span
Barrington, Illinois, US	9	1982–1986
Chagrin Falls, OH, US	6	1978–1981