Inventor
Carol L. Knox
Inventor
Monroeville, PA, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification14%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients12%
B01DSeparation10%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
C09KMaterials for miscellaneous applications, not provided for elsewhere8%
A61LMethods or apparatus for sterilising materials or objects in general6%
C08JWorking-up6%
C08LCompositions of macromolecular compounds6%
G02BOptical elements, systems or apparatus6%
C02FTreatment of water, waste water, sewage, or sludge4%
PatentTitleYear
10,857,252Microporous material20209,861,719'Microporous material'20189,546,326'Fluid emulsion purification processes using microporous materials having filtration and adsorption properties'20179,073,041'Precipitated silica sorbents and method of separating materials from a fluid stream'20158,435,631'Microporous material'20137,907,346'Photochromic materials and photochromic compositions and articles including the same'20117,465,414'Photochromic article'20087,465,415'Photochromic materials derived from ring-opening monomers and photochromic initiators'20087,261,843'Photochromic optical article'20076,531,076'Photochromic organic resin composition'20035,414,031'Intumescent nonhalogenated flame retardant polystyrene composition'19955,356,983'Particulate ammonium phosphate of small size'19945,227,416'Intumescent flame retardant composition'19935,185,103'Intumescent flame retardant composition'19935,130,349'Intumescent flame retardant composition'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1994Patents assigned to PPG INDUSTRIES INC (4)· patent assignee history
1992–2018Based in Monroeville, PA, US· patent location history
2003–2020Patents assigned to PPG IND OHIO INC (7)· patent assignee history
2007–2011Patents assigned to TRANSITIONS OPTICAL INC (3)· patent assignee history
2013–2015Patents assigned to KNOX CAROL L (2)· patent assignee history
2013Patents assigned to BOYER JAMES L (1)· patent assignee history
2015–2020Based in Apollo, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PPG IND OHIO INC | 7 | 2003–2020 |
| PPG INDUSTRIES INC | 4 | 1992–1994 |
| TRANSITIONS OPTICAL INC | 3 | 2007–2011 |
| KNOX CAROL Lself | 2 | 2013–2015 |
| BOYER JAMES L | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Monroeville, Pennsylvania, US | 12 | 1992–2018 |
| Apollo, Pennsylvania, US | 3 | 2015–2020 |