GREFCO, INC

Organization

PHILADELPHIA, PA, US

Organizations

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for heating particulate material
- Patent number 4,521,182
- Issue date Jun 4, 1985
- Grefco, Inc.
- Albert R. Collins
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Perlite boards and method for making same
- Patent number 4,313,997
- Issue date Feb 2, 1982
- Grefco, Inc.
- David L. Ruff
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Loose-fill, thermal insulation
- Patent number 4,302,344
- Issue date Nov 24, 1981
- Grefco, Inc.
- David L. Ruff
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Perlite filler
- Patent number 4,255,489
- Issue date Mar 10, 1981
- Grefco, Inc.
- Richard B. Nielsen
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Settle resistant loose-fill perlite insulation comprising particles...
- Patent number 4,212,755
- Issue date Jul 15, 1980
- Grefco, Inc.
- David L. Ruff
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Diatomaceous earth filteraid and method for its manufacture
- Patent number 4,187,174
- Issue date Feb 5, 1980
- Grefco, Inc.
- Richard B. Nielsen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Perlite filler coated with polydimethylsiloxane
- Patent number 4,183,980
- Issue date Jan 15, 1980
- Grefco, Inc.
- Richard B. Nielsen
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for making polymeric filter aids and products thereof
- Patent number 4,145,284
- Issue date Mar 20, 1979
- Grefco, Inc.
- Ernest L. Neu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Splicing strip
- Patent number 4,110,501
- Issue date Aug 29, 1978
- Grefco, Inc.
- Harlan E. Tarbell
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing an expansion joint cover
- Patent number 4,073,673
- Issue date Feb 14, 1978
- Grefco, Inc.
- Paul J. Raabe
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Construction material in sheet form and method of joining sheets ed...
- Patent number 4,071,993
- Issue date Feb 7, 1978
- Grefco, Inc.
- Sherman A. Stewart
- E04 - BUILDING
Information Patent Grant
Sealing system
- Patent number 4,067,155
- Issue date Jan 10, 1978
- Grefco, Inc.
- David L. Ruff
- E04 - BUILDING
Information Patent Grant
Twin membrane, self sealing, mechanically fastened insulated roof d...
- Patent number 4,063,395
- Issue date Dec 20, 1977
- Grefco, Inc.
- Sherman A. Stewart
- E04 - BUILDING
Information Patent Grant
Strip for fastening and sealing sheets of construction material
- Patent number 4,059,933
- Issue date Nov 29, 1977
- Grefco, Inc.
- Richard S. Funk
- E04 - BUILDING
Information Patent Grant
Method and apparatus for selectively comminuting particles of a fra...
- Patent number 4,059,231
- Issue date Nov 22, 1977
- Grefco, Inc.
- Ernest L. Neu
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Method and apparatus for drying damp powder
- Patent number 4,057,908
- Issue date Nov 15, 1977
- Grefco, Inc.
- Melvin J. Mirliss
- F26 - DRYING
Information Patent Grant
Building board products and process for producing same
- Patent number 4,011,183
- Issue date Mar 8, 1977
- Grefco Inc.
- David Lee Ruff
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Coating for porous surfaces
- Patent number 3,978,264
- Issue date Aug 31, 1976
- Grefco, Inc.
- Harlan E. Tarbell
- B32 - LAYERED PRODUCTS
Information Patent Grant
Twin membrane, self sealing, mechanically fastened insulated roof d...
- Patent number 3,958,373
- Issue date May 25, 1976
- Grefco, Inc.
- Sherman A. Stewart
- E04 - BUILDING

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Trademarklast 30 trademarks

Information Trademark
73769533 - DICA-MAT
- Serial number 73769533
- Registration number 1578454
- Filing date Dec 15, 1988
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73769476 - DICA-BLOC
- Serial number 73769476
- Registration number 1578453
- Filing date Dec 15, 1988
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73441413 - DICAPERL
- Serial number 73441413
- Registration number 1300047
- Filing date Aug 29, 1983
- Grefco, Inc.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73185855 - SHEATHER
- Serial number 73185855
- Registration number 1126545
- Filing date Sep 15, 1978
- GREFCO, INC.
- 17 - Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes
Information Trademark
73144039 - PK PLUS
- Serial number 73144039
- Registration number 1097467
- Filing date Oct 7, 1977
- GREFCO, INC.
- 17 - Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes
Information Trademark
73096577 - DICAMITE
- Serial number 73096577
- Registration number 1069653
- Filing date Aug 13, 1976
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73061166 - GT
- Serial number 73061166
- Registration number 1042033
- Filing date Aug 22, 1975
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73048155 - DICA-BRITE
- Serial number 73048155
- Registration number 1031871
- Filing date Mar 31, 1975
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73027543 - PERMA-FASTNER
- Serial number 73027543
- Registration number 1011365
- Filing date Jul 23, 1974
- GREFCO, INC.
- 6 - Common metals and their alloys
Information Trademark
73027542 - MICROPERL
- Serial number 73027542
- Registration number 1012714
- Filing date Jul 23, 1974
- GREFCO, INC.
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
73015936 - DICA-SCOOP
- Serial number 73015936
- Registration number 1012915
- Filing date Mar 14, 1974
- GREFCO, INC.
- 16 - Paper, cardboard and goods made from these materials, not included in other classes
Information Trademark
72457545 - DTS
- Serial number 72457545
- Registration number 992963
- Filing date May 14, 1973
- GREFCO, INC.
- 19 - Building materials (non-metallic)
Information Trademark
72402095 - DICA-SORB
- Serial number 72402095
- Registration number 945943
- Filing date Sep 7, 1971
- GREFCO, INC.
- 4 - Industrial oils and greases
Information Trademark
72396337 - PK
- Serial number 72396337
- Registration number 945047
- Filing date Jul 1, 1971
- GREFCO, INC.
- 17 - Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes
Information Trademark
72394093 - FIBERPERL
- Serial number 72394093
- Registration number 940118
- Filing date Jun 7, 1971
- GREFCO, INC.
- 4 - Industrial oils and greases
Information Trademark
72380479 - DICA-PAK
- Serial number 72380479
- Registration number 933969
- Filing date Jan 8, 1971
- GREFCO, INC.
- 16 - Paper, cardboard and goods made from these materials, not included in other classes
Information Trademark
72370103 - FIBERPERL
- Serial number 72370103
- Registration number 924398
- Filing date Sep 8, 1970
- GREFCO, INC.
- 4 - Industrial oils and greases
Information Trademark
72235665 - METALASTIC
- Serial number 72235665
- Registration number 832059
- Filing date Jan 3, 1966
- GREFCO, INCORPORATED
- 19 - Building materials (non-metallic)

GREFCO, INC

Organization

Patents Grantslast 30 patents

Method and apparatus for heating particulate material

Perlite boards and method for making same

Loose-fill, thermal insulation

Perlite filler

Settle resistant loose-fill perlite insulation comprising particles...

Diatomaceous earth filteraid and method for its manufacture

Perlite filler coated with polydimethylsiloxane

Method for making polymeric filter aids and products thereof

Splicing strip

Process for producing an expansion joint cover

Construction material in sheet form and method of joining sheets ed...

Sealing system

Twin membrane, self sealing, mechanically fastened insulated roof d...

Strip for fastening and sealing sheets of construction material

Method and apparatus for selectively comminuting particles of a fra...

Method and apparatus for drying damp powder

Building board products and process for producing same

Coating for porous surfaces

Twin membrane, self sealing, mechanically fastened insulated roof d...

Trademarklast 30 trademarks

73769533 - DICA-MAT

73769476 - DICA-BLOC

73441413 - DICAPERL

73185855 - SHEATHER

73144039 - PK PLUS

73096577 - DICAMITE

73061166 - GT

73048155 - DICA-BRITE

73027543 - PERMA-FASTNER

73027542 - MICROPERL

73015936 - DICA-SCOOP

72457545 - DTS

72402095 - DICA-SORB

72396337 - PK

72394093 - FIBERPERL

72380479 - DICA-PAK

72370103 - FIBERPERL

72235665 - METALASTIC