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Inventor

Robert P. Vilyus

Inventor
Houma, LA, US

Overview

3→
Patents
1977–1996
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.

C22Cprimary
C22CAlloys25%
B22FWorking metallic powder13%
C09KMaterials for miscellaneous applications, not provided for elsewhere13%
C21DModifying the physical structure of ferrous metals13%
E21BEarth or rock drilling13%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
PatentTitleYear
5,575,333'Centralizer'19964,071,381'Steel abrasive materials'19784,023,985'Steel abrasives and method for producing same'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1978Patents assigned to CLEVELAND METAL ABRASIVE (2)· patent assignee history
1977Based in Maple Heights, OH, US· patent location history
1978Based in Solon, OH, US· patent location history
1996Patents assigned to WEATHERFORD US INC (1)· patent assignee history
1996Based in Houma, LA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CLEVELAND METAL ABRASIVE21977–1978
WEATHERFORD US INC11996
Locations
LocationPatentsSpan
Houma, LA, US11996
Solon, OH, US11978
Maple Heights, OH, US11977