Inventor

David C. Grant

Inventor

Gibsonia, PA, US

Overview

43→

Patents

1977–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 43 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B09Cprimary

B09CReclamation of contaminated soil13%

G21FProtection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment10%

B01DSeparation7%

C02FTreatment of water, waste water, sewage, or sludge7%

B03BSeparating solid materials using liquids or using pneumatic tables or jigs4%

C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis4%

G01CMeasuring distances, levels or bearings4%

G01NInvestigating or analysing materials by determining their chemical or physical properties4%

B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles3%

E21BEarth or rock drilling3%

PatentTitleYear

11,118,435Compliant screen shroud to limit expansion2021 10,995,491Planter block2021 10,220,124Fiber array for optical imaging and therapeutics2019 5,954,936'Robust technetium removal method and system'1999 5,640,704'Process for solidification and immobilization of harmful waste species'1997 5,640,701'Method for remediating soil containing radioactive contaminants'1997 5,564,105'Method of treating a contaminated aqueous solution'1996 5,539,788'Prompt gamma neutron activation analysis system'1996 5,503,175'Water safety system'1996 5,436,384'Process for the remediation of contaminated particulate material'1995 5,414,195'System and method for on-line monitoring and control of heavy metal contamination in soil washing process'1995 5,372,650'Method for treatment of waste sand'1994 5,370,827'Solution decontamination method using precipitation techniques'1994 5,361,910'Modified mineral jig'1994 5,346,534'Process for treating an article with a volatile fluid'1994 5,343,885'Vacuum air lock for a closed perimeter solvent conservation system'1994 5,330,658'Solution decontamination method using precipitation and flocculation techniques'1994 5,324,433'In-situ restoration of contaminated soils and groundwater'1994 5,316,223'Method and apparatus for cleaning contaminated particulate material'1994 5,304,253'Method for cleaning with a volatile solvent'1994 5,300,258'Method for decontaminating soil containing resins'1994 5,294,310'Surfactant recovery process'1994 5,275,739'In-situ restoration of contaminated soils and groundwater using calcium chloride'1994 5,268,128'Method and apparatus for cleaning contaminated particulate material'1993 5,266,494'Bench scale treatability method for evaluation of soil washing'1993 5,242,503'Method of restoring contaminated solids using ion exchange powder contact'1993 5,232,476'Solvent recovery and reclamation system'1993 5,230,167'Removal or organics and volatile metals from soils using thermal desorption'1993 5,192,340'Hollow fiber filter cleaning system and more particularly to the control of emissions from solvent cleaning equipment'1993 5,176,187'Flexible gas salvage containers and process for use'1993 5,133,901'System and method for on-line monitoring and control of heavy metal contamination in soil washing process'1992 5,128,068'Method and apparatus for cleaning contaminated particulate material'1992 5,106,404'Emission control system for fluid compositions having volatile constituents and method thereof'1992 5,094,277'Direct condensation refrigerant recovery and restoration system'1992 5,058,631'Flexible gas salvage containers and process for use'1991 5,045,240'Contaminated soil restoration method'1991 4,878,931'Two stage vapor recovery system'1989 4,863,271'Optical combiner for a ring laser gyro'1989 4,778,628'Underground waste barrier structure'1988 4,383,763'Controllable mirrors'1983 4,317,089'Ring laser'1982 4,270,802'Permeability restoration and lowering of uranium leakage from leached ore beds'1981 4,000,947'Optical readout for differential laser gyros'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1989Patents assigned to LITTON SYSTEMS INC (3)· patent assignee history

1982–1989Based in Thousand Oaks, CA, US· patent location history

1988–1999Based in Gibsonia, PA, US· patent location history

1991–1997Patents assigned to WESTINGHOUSE ELECTRIC CORP (21)· patent assignee history

1991–1993Patents assigned to ASHLAND OIL INC (3)· patent assignee history

1991–1996Based in Selbyville, DE, US· patent location history

1992–1994Patents assigned to BAXTER INT (6)· patent assignee history

2019Patents assigned to GRANT DAVID C (1)· patent assignee history

2021Based in Frisco, TX, US· patent location history

2021Based in Old Town, ME, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WESTINGHOUSE ELECTRIC CORP	21	1991–1997
BAXTER INT	6	1992–1994
ASHLAND OIL INC	3	1991–1993
LITTON SYSTEMS INC	3	1982–1989
GRANT DAVID Cself	1	2019

Locations

Location	Patents	Span
Gibsonia, Pennsylvania, US	24	1988–1999
Selbyville, Delaware, US	10	1991–1996
Thousand Oaks, California, US	3	1982–1989
Frisco, Texas, US	1	2021
Old Town, ME, US	1	2021