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Marshall L. Spector
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Allentown, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for protecting plants and plant matter from stress
Patent number
4,802,905
Issue date
Feb 7, 1989
Air Products and Chemicals, Inc.
Marshall Spector
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Grant
Biological wastewater treating system
Patent number
4,731,185
Issue date
Mar 15, 1988
Air Products and Chemicals, Inc.
Michael S. K. Chen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for minimizing diurnal swing in phosphorus content of efflue...
Patent number
4,650,585
Issue date
Mar 17, 1987
Air Products and Chemicals, Inc.
Sun-Nan Hong
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Avoidance of rising sludge in biological wastewater treatment clari...
Patent number
4,556,491
Issue date
Dec 3, 1985
Air Products and Chemicals, Inc.
Marshall L. Spector
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for the removal of ammoniacal nitrogen in the BOD sorption...
Patent number
4,552,663
Issue date
Nov 12, 1985
Air Products and Chemicals, Inc.
Marshall L. Spector
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Removal of phosphates and BOD from wastewaters
Patent number
4,488,968
Issue date
Dec 18, 1984
Air Products and Chemicals, Inc.
Sun-Nan Hong
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Control of activated sludge wastewater treating process for enhance...
Patent number
4,271,026
Issue date
Jun 2, 1981
Air Products and Chemicals, Inc.
Michael S. Chen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
High nitrogen and phosphorous content biomass produced by treatment...
Patent number
4,162,153
Issue date
Jul 24, 1979
Air Products and Chemicals, Inc.
Marshall L. Spector
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information
Patent Grant
Production of non-bulking activated sludge
Patent number
4,056,465
Issue date
Nov 1, 1977
Air Products and Chemicals, Inc.
Marshall L. Spector
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Removal of BOD and nitrogenous pollutants from wastewaters
Patent number
3,994,802
Issue date
Nov 30, 1976
Air Products and Chemicals, Inc.
Jeremiah P. Casey
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE