Inventor
James A. Stevenson
Inventor
Pittsburgh, PA, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus14%
Y10TTechnical subjects covered by former us classification14%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form11%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein11%
B29CShaping or joining of plastics6%
B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers6%
C08LCompositions of macromolecular compounds6%
A45DHairdressing or shaving equipment3%
B29BPreparation or pretreatment of the material to be shaped3%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts3%
PatentTitleYear
11,052,977Pipe laying apparatus202110,943,513Fixing wrap-around labels with LED-curable adhesives20218,679,605'Peelable child resistant pharmaceutical blister lidstock'20147,478,913'Back-lit displays with high illumination uniformity'20097,436,469'Composite diffuser plates and direct-lit liquid crystal displays using same'20087,404,994'Lidstock material having improved burst strength'20087,379,245'Articles including films with mating structured surfaces'20086,846,089'Method for stacking surface structured optical films'20056,631,030'Projection screens and methods for making such projection screens'20036,590,711'Light directing construction having corrosion resistant feature'20035,958,531'Peelable and heat sealable lidstock material for steel end containers'19995,626,929'Peelable and heat sealable lidstock material for plastic containers'19975,236,649'Extrudable thermoplastic particulates'19935,115,029'Extrudable polymeric composition'19924,815,484'Styling comb for use in hair treatments'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Based in Dallas, TX, US· patent location history
1992–1993Patents assigned to DOW CHEMICAL CO (2)· patent assignee history
1992–2021Based in Pittsburgh, PA, US· patent location history
1997–1999Patents assigned to ALUMINUM CO OF AMERICA (2)· patent assignee history
2003–2009Patents assigned to 3M INNOVATIVE PROPERTIES CO (6)· patent assignee history
2003–2009Based in St. Paul, MN, US· patent location history
2014Based in Alcoa Center, PA, US· patent location history
2021Patents assigned to LAYTRIX LTD (1)· patent assignee history
2021Patents assigned to PEPSICO INC (1)· patent assignee history
2021Based in Darlington, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| 3M INNOVATIVE PROPERTIES CO | 6 | 2003–2009 |
| ALUMINUM CO OF AMERICA | 2 | 1997–1999 |
| DOW CHEMICAL CO | 2 | 1992–1993 |
| LAYTRIX LTD | 1 | 2021 |
| PEPSICO INC | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Pittsburgh, Pennsylvania, US | 6 | 1992–2021 |
| St. Paul, Minnesota, US | 6 | 2003–2009 |
| Darlington, GB | 1 | 2021 |
| Alcoa Center, Pennsylvania, US | 1 | 2014 |
| Dallas, Texas, US | 1 | 1989 |