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Inventor

Roberta C. Harper

Inventor
St. Paul, MN, US

Overview

3→
Patents
2000–2001
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

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

D04Hprimary
D04HMaking textile fabrics, e.g. from fibres or filamentary material25%
A41DOuterwear17%
A62BDevices, apparatus or methods for life-saving17%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form17%
A61FFilters implantable into blood vessels8%
A61LMethods or apparatus for sterilising materials or objects in general8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
6,234,171'Molded respirator containing sorbent particles'20016,133,173'Nonwoven cohesive wrap'20006,102,039'Molded respirator containing sorbent particles'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2001Patents assigned to 3M INNOVATIVE PROPERTIES CO (3)· patent assignee history
2000–2001Based in St. Paul, MN, US· patent location history
2000Based in St. Joseph, WI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3M INNOVATIVE PROPERTIES CO32000–2001
Locations
LocationPatentsSpan
St. Paul, Minnesota, US22000–2001
St. Joseph, WI, US12000