Arnold I Rosenberg, Age 74Richmond, VA

4355079, Oct 19, 1982

Apr 21, 1981

6/256221

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD

W. R. Grace & Co. - New York NY

B32B 900
B32B 1504

428469

This invention is directed to coating metal elements with a thin film of calcium nitrite (including compositions containing same) whereby the metal is inhibited against corrosion on being placed in hydraulic cement.

4092109, May 30, 1978

Jun 28, 1976

5/700343

Arnold Morry Rosenberg - Potomac MD
James Michael Gaidis - Ellicott City MD

W. R. Grace & Co. - New York NY

C23F 1104
C23F 1108
C23F 902
C09K 318

21 25R

A method of use of calcium nitrite in corrosion control in hydraulic cements that contain metal pieces or structures, and in certain related uses, e. g. , snow removal from alite cement bridge decking.

4888058, Dec 19, 1989

Sep 29, 1986

6/912018

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD
Lawrence J. Kindt - Woodbine MD

W. R. Grace & Co.-Conn. - New York NY

C04B 1404
C04B 2216
C04B 2406

106 98

A stable, aqueous dispersion of silica fume is formed using a 70-80% ferrosilicon production fume by-product by the inclusion of very small amounts of a stabilizing agent selected from a phosphoric acid, citric acid, hydrofluoric, fluorosilicic acid or their sodium or potassium salts or mixtures thereof.

4285733, Aug 25, 1981

Feb 22, 1980

6/123741

Arnold M. Rosenberg - Potomac MD

W. R. Grace & Co. - New York NY

C04B 702

106 98

This invention is directed to a concrete which is capable of inhibiting corrosion of metal pieces contained therein or in contact therewith comprising a high strength concrete formed from hydraulic cement and containing at least about 2 percent Ca(NO. sub. 2). sub. 2 therein.

4172830, Oct 30, 1979

Nov 14, 1977

5/851066

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD

W. R. Grace & Co. - New York NY

B32B 700

428245

A novel preformed, sheet-like, flexible material suitable for waterproofing or substructural surfaces, the sheet-like material having a laminate structure of (1) a waterproof and waterproofing pressure-sensitive adhesive membrane having a surface of predetermined width extending from edge to edge of said membrane; and (2) a support covering said entire predetermined width of said surface, said support comprising (a) a major flexible support sheet superimposed on a major portion of said surface, and (b) at least one minor support sheet, each of said at least one minor support sheets extending from one of said edges toward the major support sheet. The flexible polymeric support covering the major portion of the membrane's covered surface has its free face substantially non-adherent to the composition of the waterproofing adhesive membrane. Each of the flexible polymeric support(s) covering the minor portion(s) of the membrane's covered surface has both faces substantially non-adherent to the waterproofing adhesive membrane. The novel structural material can be in the form of rolls comprising alternate layers of membrane and support coverings which can be readily applied to a substructure by unrolling and removing the support sheet covering the minor portion of the membrane.

4110120, Aug 29, 1978

Jun 28, 1976

5/699679

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD

W. R. Grace & Co. - New York NY

C04B 702

106 99

Improved method of forming zinc chromate on galvanized reinforcing bars comprising treating the bar directly with calcium chromate.

4221628, Sep 9, 1980

Mar 16, 1979

6/021106

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD

W. R. Grace & Co. - New York NY

B44C 702
E04D 1506

156577

An applicator suitable for one-man application of sheet material in an accurate manner onto structural substrates wherein the applicator can direct changes in the path of application while readily maintaining control over the roll of sheet material.

4398959, Aug 16, 1983

Feb 25, 1982

6/352292

Arnold M. Rosenberg - Potomac MD
James M. Gaidis - Ellicott City MD
Howard J. Troffkin - Potomac MD

W. R. Grace & Co. - New York NY

C04B 735

106 90

Reinforced concrete structures often suffer corrosion damage. This damage is repaired by removing the layer of distressed concrete around the metal reinforcement and filling in the removed area with a high content calcium nitrite-containing cement based composition.