Inventor
Paul F. Richardson
Inventor
Euless, TX, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
D21Hprimary
D21HPulp compositions19%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials13%
B02CCrushing, pulverising, or disintegrating in general10%
C08LCompositions of macromolecular compounds10%
E01CConstruction of, or surfaces for, roads, sports grounds, or the like10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
C02FTreatment of water, waste water, sewage, or sludge6%
C07DHeterocyclic compounds6%
A01NPreservation of bodies of humans or animals or plants or parts thereof3%
C07CAcyclic or carbocyclic compounds3%
PatentTitleYear
10,858,790Methods of forming an asphalt shingle waste powder from asphalt shingle waste202010,697,133Methods of forming an asphalt shingle waste powder filled coating202010,683,620Methods of forming an asphalt shingle waste powder from asphalt shingle waste20209,920,482'Method of increasing paper strength'20189,556,383'Asphalt oxidation technique'20178,728,275'Glycerol-based polymers for reducing deposition of organic contaminants in papermaking processes'20148,709,209'Anionic lipophilic glycerol-based polymers for organic deposition control in papermaking processes'20146,951,946'Large scale synthesis of 1,2,4- and 1,3,4-oxadiazole carboxylates'20056,806,380'Modified safe and efficient process for the environmentally friendly synthesis of imidoesters'20046,642,390'One step synthesis of 1,2,3-triazole carboxylic acids'20035,532,413'Storage stable biocide composition and process for making the same'19965,433,824'Melamine-formaldehyde polymer for controlling stickies'19955,286,347'Melamine formaldehyde polymer for pitch control method'19944,948,464'Acrylamide-2-acrylamido-2-methylpropanesulfonic acid polymers as formation aids in wet laid nonwovens production'19904,704,209'Sulphonate-containing terpolymers as flocculants for suspended solids'19874,673,511'Acrylamide diallyl dimethyl ammonium chloride copolymers as improved dewatering acids for mineral processing'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1990Patents assigned to NALCO CHEMICAL CO (3)· patent assignee history
1987–1990Based in Glen Ellyn, IL, US· patent location history
1994–1996Patents assigned to CALGON CORP (3)· patent assignee history
1994–1995Based in Lebanon, PA, US· patent location history
1996–2018Based in Pittsburgh, PA, US· patent location history
2003–2005Patents assigned to LEXICON PHARMACEUTICALS INC (3)· patent assignee history
2003–2005Based in Monmouth Junction, NJ, US· patent location history
2014–2018Patents assigned to ECOLAB USA INC (2)· patent assignee history
2017–2020Based in Euless, TX, US· patent location history
2020Patents assigned to BUILDING MAT INVESTMENT CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BUILDING MAT INVESTMENT CORP | 3 | 2020 |
| CALGON CORP | 3 | 1994–1996 |
| LEXICON PHARMACEUTICALS INC | 3 | 2003–2005 |
| NALCO CHEMICAL CO | 3 | 1987–1990 |
| ECOLAB USA INC | 2 | 2014–2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Euless, Texas, US | 4 | 2017–2020 |
| Pittsburgh, Pennsylvania, US | 4 | 1996–2018 |
| Monmouth Junction, New Jersey, US | 3 | 2003–2005 |
| Glen Ellyn, Illinois, US | 3 | 1987–1990 |
| Lebanon, Pennsylvania, US | 2 | 1994–1995 |