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Ahmad Arfaei
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Chelmsford, MA, US
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last 30 patents
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Patent Grant
High early-strength-enhancing admixture for precast hydraulic cemen...
Patent number
5,840,114
Issue date
Nov 24, 1998
W. R. Grace & Co.-Conn.
Ara Avedis Jeknavorian
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Cement and cement composition having improved rheological properties
Patent number
5,753,744
Issue date
May 19, 1998
W. R. Grace & Co.-Conn.
David Charles Darwin
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Cement admixture product having improved rheological properties and...
Patent number
5,728,207
Issue date
Mar 17, 1998
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Air controlling superplasticizers
Patent number
5,703,174
Issue date
Dec 30, 1997
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Cement admixture product having improved rheological properties and...
Patent number
5,633,298
Issue date
May 27, 1997
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Hydraulic cement set accelerators based on nitroalcohols
Patent number
5,531,825
Issue date
Jul 2, 1996
W. R. Grace & Co.-Conn.
Ellis M. Gartner
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Corrosion inhibiting composition for reinforced concrete and method...
Patent number
5,422,141
Issue date
Jun 6, 1995
W. R. Grace & Co.-Conn.
Robert J. Hoopes
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Hydraulic cement set-accelerating admixtures incorporating glycols
Patent number
5,348,583
Issue date
Sep 20, 1994
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Hydraulic cement set-accelerating admixtures incorporating glycols
Patent number
5,340,385
Issue date
Aug 23, 1994
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Hydraulic cement set-accelerating admixtures incorporating amino ac...
Patent number
5,211,751
Issue date
May 18, 1993
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Aqueous extrusion of silicon nitride
Patent number
5,209,885
Issue date
May 11, 1993
W. R. Grace & Co.-Conn.
Tariq Quadir
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Hydraulic cement additives and hydraulic cement compositions contai...
Patent number
4,960,465
Issue date
Oct 2, 1990
W. R. Grace & Co.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method of controlling air entrainment in concrete compositions
Patent number
4,948,429
Issue date
Aug 14, 1990
W. R. Grace & Co.-Conn.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Corrosion inhibiting hydraulic cement additives and compositions co...
Patent number
4,946,506
Issue date
Aug 7, 1990
W. R. Grace & Co.-Conn.
Ahmad Arfaei
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Hydraulic cement additives and hydraulic cement compositions contai...
Patent number
4,814,014
Issue date
Mar 21, 1989
W. R. Grace & Co.
Ahmad Arfaei
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES