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Inventor

Steven J. St. Mary

Inventor
St. Paul, MN, US

Overview

4→
Patents
1989–1994
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry43%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
B01DSeparation14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
5,366,632'Glass microbead filter and method of filtering'19944,971,736'Method of preparing composite chromatographic article'19904,906,378'Composite chromatographic article'19904,810,381'Composite chromatographic article'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1994Patents assigned to MINNESOTA MINING & MFG (4)· patent assignee history
1989–1990Based in St. Paul, MN, US· patent location history
1990Based in North Oaks, MN, US· patent location history
1994Based in Roseville, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG41989–1994
Locations
LocationPatentsSpan
St. Paul, Minnesota, US21989–1990
Roseville, Minnesota, US11994
North Oaks, Minnesota, US11990