Inventor
David A. Cowan
Inventor
Cranberry Township, PA, US
Overview
33→
Patents
1981–2020
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 33 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification15%
C04BLime, magnesia11%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management11%
C08JWorking-up7%
E01FAdditional work, such as equipping roads or the construction of platforms, helicopter landing stages, signs, snow fences, or the like6%
A61MDevices for introducing media into, or onto, the body4%
A62BDevices, apparatus or methods for life-saving4%
B29CShaping or joining of plastics4%
C01BNon-metallic elements4%
E04BGeneral building constructions4%
PatentTitleYear
10,556,135Portable chemical oxygen generator2020D0869768Hair clipper201910,151,417Turn-key acoustic pipe lagging system201810,039,942Portable chemical oxygen generator20189,849,312Portable chemical oxygen generator2017RE043253'Lightweight concrete compositions'20128,101,102'Method for improving the resistance of fumigant sorption in an expandable polymer produce container and a related container'20128,101,101'Methods for improving the resistance of fumigant sorption in a produce container and a related produce containers'20128,029,617'Lightweight concrete compositions'20117,972,695'Coating composition for thermoplastic resin particles for forming foam containers'20117,964,272'Lightweight compositions and articles containing such'20117,892,645'Coating composition for thermoplastic resin particles for forming foam containers'20117,790,302'Lightweight compositions and articles containing such'20107,785,711'Coating composition for thermoplastic resin particles for forming foam containers'20107,744,692'Lightweight concrete compositions'20107,736,740'Foam containers and articles from coated thermoplastic resin particles and methods for forming'20107,699,929'Lightweight concrete compositions'20107,666,258'Lightweight compositions and articles containing such'20107,644,548'Lightweight concrete compositions'20107,632,348'Lightweight concrete compositions containing antimicrobial agents'20097,294,655'Coating composition for thermoplastic resin particles for forming foam containers'20077,252,866'Thermoplastic film for a disposable container made of expandable thermoplastic particles'20076,182,600'Traffic channeling device'2001D0406543'Traffic channelizer'19995,865,427'Plastic fencing with reflective tape'19995,421,668'Tread ballast or weight for temporary traffic control devices and posts'19955,234,280'Traffic channeling devices'1993D0289848'Condiment grinding device'19874,387,551'Heat-sealable, ovenable containers and method of manufacture'1983D0268637'Condiment mill'1983D0259090'Combined salt and pepper mill'1981D0259089'Pepper mill'19814,261,504'Heat-sealable, ovenable containers'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to COLE & MASON U S A LTD (2)· patent assignee history
1981–1987Based in London, GB· patent location history
1987–2012Patents assigned to COWAN DAVID A (4)· patent assignee history
1993–2001Patents assigned to PLASTIC SAFETY SYSTEMS INC (5)· patent assignee history
1993–1999Based in Cleveland, OH, US· patent location history
1995–2001Based in Pepper Pike, OH, US· patent location history
2007–2012Patents assigned to NOVA CHEM INC (17)· patent assignee history
2007–2012Based in Cranberry Township, PA, US· patent location history
2017–2020Patents assigned to RAPID OXYGEN COMPANY INC (3)· patent assignee history
2017–2020Based in Cornwall, CT, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NOVA CHEM INC | 17 | 2007–2012 |
| PLASTIC SAFETY SYSTEMS INC | 5 | 1993–2001 |
| COWAN DAVID Aself | 4 | 1987–2012 |
| RAPID OXYGEN COMPANY INC | 3 | 2017–2020 |
| COLE & MASON U S A LTD | 2 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cranberry Township, Pennsylvania, US | 17 | 2007–2012 |
| London, GB | 4 | 1981–1987 |
| Cornwall, CT, US | 3 | 2017–2020 |
| Pepper Pike, OH, US | 3 | 1995–2001 |
| Cleveland, OH, US | 2 | 1993–1999 |