Inventor
David B. Mitchell
Inventor
Arlington Heights, IL, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers16%
C02FTreatment of water, waste water, sewage, or sludge14%
C08LCompositions of macromolecular compounds10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B01DSeparation6%
B05BSpraying apparatus6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
C08HDerivatives of natural macromolecular compounds6%
C10GCracking hydrocarbon oils4%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management4%
PatentTitleYear
8,842,796'Nuclear fuel rod pellet stack inspection'20148,435,409'Activated sludge process in wastewater treatment'20138,075,779'Water treatment'20118,062,132'Subscription based services for closed computing systems'20115,977,287'Treatment of aqueous systems using a chemically modified tannin'19995,904,158'Thermo responsive method of removing cured paint'19995,843,337'Treatment of aqueous systems using a chemically modified tannin'19985,830,315'Treatment of Aqueous systems using a chemically modified tannin'19985,298,186'Paint spray booth organic detackification treatment'19945,248,449'Emulsion breaking using cationic quaternary ammonium starch/gums'19935,248,440'Paint spray booth treatment of waterborne coatings'19935,169,562'Emulsion breaking using cationic quaternary ammonium starch/gums'19924,948,513'Method for controlling overspray in paint spray booths'19904,913,825'Method for controlling overspray in paint spray booths'19904,904,393'Method for controlling overspray in paint spray booths'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1994Patents assigned to GRACE W R & CO (7)· patent assignee history
1990Based in Palatine, IL, US· patent location history
1992–1999Based in Arlington Heights, IL, US· patent location history
1998–1999Patents assigned to BETZDEARBORN INC (4)· patent assignee history
1999–2013Based in Yardley, PA, US· patent location history
2011Based in Sammamish, WA, US· patent location history
2013–2014Patents assigned to MITCHELL DAVID B (2)· patent assignee history
2013Patents assigned to ARTHUR-MENSAH KOJO (1)· patent assignee history
2014Patents assigned to ALESHIN YURIY (1)· patent assignee history
2014Based in Columbia, SC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GRACE W R & CO | 7 | 1990–1994 |
| BETZDEARBORN INC | 4 | 1998–1999 |
| MITCHELL DAVID Bself | 2 | 2013–2014 |
| ALESHIN YURIY | 1 | 2014 |
| ARTHUR-MENSAH KOJO | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Arlington Heights, Illinois, US | 7 | 1992–1999 |
| Yardley, Pennsylvania, US | 3 | 1999–2013 |
| Palatine, Illinois, US | 3 | 1990 |
| Columbia, SC, US | 1 | 2014 |
| Sammamish, Washington, US | 1 | 2011 |