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Theodore A. Litovitz
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Annapolis, MD, US
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Patents Grants
last 30 patents
Information
Patent Grant
Ion exchange compositions
Patent number
4,902,426
Issue date
Feb 20, 1990
Macedo; Pedro B.
Pedro B. Macedo
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Fixation by ion exchange of toxic materials in a glass matrix
Patent number
4,469,628
Issue date
Sep 4, 1984
Catherine J. Simmons
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical sensing apparatus and method
Patent number
4,443,700
Issue date
Apr 17, 1984
Macedo; Pedro B.
Pedro B. Macedo
G02 - OPTICS
Information
Patent Grant
Method for making foam glass from diatomaceous earth and fly ash
Patent number
4,430,108
Issue date
Feb 7, 1984
De Macedo; Pedro Buarque
Hamid Hojaji
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fixation of radioactive materials in a glass matrix
Patent number
4,362,659
Issue date
Dec 7, 1982
Macedo; Pedro B.
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical sensing apparatus and method
Patent number
4,342,907
Issue date
Aug 3, 1982
Macedo; Pedro B.
Pedro B. Macedo
G02 - OPTICS
Information
Patent Grant
Method of leaching glass preforms
Patent number
4,319,905
Issue date
Mar 16, 1982
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing a strengthened glass structural member
Patent number
4,313,748
Issue date
Feb 2, 1982
Pedro B. Macedo
G02 - OPTICS
Information
Patent Grant
Optical waveguide and method and compositions for producing same
Patent number
4,236,930
Issue date
Dec 2, 1980
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fixation of radioactive materials in a glass matrix
Patent number
4,224,177
Issue date
Sep 23, 1980
Macedo; Pedro B.
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Strengthened glass structural member
Patent number
4,220,682
Issue date
Sep 2, 1980
Pedro B. Macedo
G02 - OPTICS
Information
Patent Grant
Method for producing an impregnated waveguide
Patent number
4,110,093
Issue date
Aug 29, 1978
Pedro B. Macedo
G02 - OPTICS
Information
Patent Grant
Method of precipitation of a dopant in a porous silicate glass
Patent number
4,110,096
Issue date
Aug 29, 1978
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of producing optical wave guide fibers
Patent number
3,938,974
Issue date
Feb 17, 1976
Pedro B. Macedo
G02 - OPTICS