Inventor
David A. Grattan
Inventor
Bolingbrook, IL, US
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C23Fprimary
C23FNon-mechanical removal of metallic material from surface24%
C02FTreatment of water, waste water, sewage, or sludge18%
F22BMethods of steam generation14%
G05DSystems for controlling or regulating non-electric variables14%
F22DPreheating, or accumulating preheated, feed-water for steam generation6%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds4%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
Y10TTechnical subjects covered by former us classification4%
C01BNon-metallic elements2%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds2%
PatentTitleYear
9,352,980'Method and device for preventing corrosion in hot water systems'20169,017,649'Method of stabilizing silica-containing anionic microparticles in hard water'20158,980,173'Systems and methods for monitoring and controlling corrosion in hot water systems'20158,906,202'Method of detecting and reducing contamination in papermaking boiler systems'20148,771,593'Method and device for preventing corrosion in hot water systems'20148,153,057'Method and device for preventing corrosion in hot water systems'20127,998,352'Method and device for cleanup and deposit removal from internal hot water system surfaces'20117,955,853'Method and device for creating and analyzing an at temerature and pressure oxidation-reduction potential signature in hot water systems for preventing corrosion'20117,951,298'Method and device for preventing corrosion in hot water systems undergoing intermittent operations'20117,201,178'Continuous chemical feeder and method of use thereof'20076,790,666'Method to ascertain whether soluble hardness is calcium or magnesium based'20046,790,664'Fluorometric monitoring and control of soluble hardness of water used in industrial water systems'20045,534,053'Composition for reducing or eliminating static charge in adhesive film'19964,999,161'Modified polymers incorporating fatty amines'19914,929,364'Amine/gallic acid blends as oxygen scavengers'19904,657,785'Use of benzo and tolyltriazole as copper corrosion inhibitors for boiler condensate systems'19874,604,431'Chemical modification of (meth)acrylic acid homopolymers and alkyl (meth)acrylate polymers in aqueous systems with amino sulfonic acids'19864,462,830'Corrosion inhibited copper nitrate solutions'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1991Patents assigned to NALCO CHEMICAL CO (5)· patent assignee history
1984Based in Hinsdale, IL, US· patent location history
1986–1991Based in LaGrange Highlands, IL, US· patent location history
1996–2004Based in LaGrange, IL, US· patent location history
2004–2016Patents assigned to NALCO CO (12)· patent assignee history
2004Based in Darien, IL, US· patent location history
2007–2016Based in Bolingbrook, IL, US· patent location history
2012–2015Patents assigned to GRATTAN DAVID A (4)· patent assignee history
2012–2014Patents assigned to HICKS PETER D (3)· patent assignee history
2015Patents assigned to KEISER BRUCE A (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NALCO CO | 12 | 2004–2016 |
| NALCO CHEMICAL CO | 5 | 1984–1991 |
| GRATTAN DAVID Aself | 4 | 2012–2015 |
| HICKS PETER D | 3 | 2012–2014 |
| KEISER BRUCE A | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bolingbrook, Illinois, US | 10 | 2007–2016 |
| LaGrange Highlands, Illinois, US | 4 | 1986–1991 |
| LaGrange, Illinois, US | 2 | 1996–2004 |
| Darien, Illinois, US | 1 | 2004 |
| Hinsdale, Illinois, US | 1 | 1984 |