Sean S Wise

H72, Jun 3, 1986

Jan 23, 1984

6/573097

Sean Wise - Abingdon MD
Ronald A. Sasse - Abingdon MD

The United States of America as represented by the Secretary of the Army - Washington DC

C06B 3102

149 61

The instant invention relates to a black powder type pyrotechnic composit comprising potassium nitrate, sulfur and an organic crystalline compound as a fuel in place of the charcoal conventionally employed. The organic compound contains at least one hydroxyl group or carboxyl group, including salts thereof, attached to an aromatic, e. g. benzene ring, and contains 75 (. +-. 20) percent carbon, 25 (. +-. 20) percent oxygen, 5 (. +-. 5) percent hydrogen and up to 20 percent of other elements, on a weight percent basis.

46665200, May 19, 1987

Sep 18, 1985

6/777324

Randall P. Bright - Bowie MD
David D. Double - Annapolis MD
Sean Wise - Millersville MD

F. P. C. Research, Inc. - Clinton MD

C04B 702

106 97

An improvement over the cementitious composite material described in U. S. Pat. No. 4,482,385 consists in replacing the stainless steel particles with graded silicon carbide particles. The resulting material has a lower coefficient of thermal expansion, a greater thermal conductivity and an increased surface abrasion resistance as compared to the material described in the patent and is a lighter weight material. These properties enhance its applicability to certain uses.

47923610, Dec 20, 1988

Aug 8, 1986

6/894815

David D. Double - Annapolis MD
Randall P. Bright - Bowie MD
Sean Wise - Millersville MD

Cemcom Corp. - Lanham MD

C04B 1400
C04B 1402

106 97

Friction materials intended to be used as brake shoes, brake pads, and other brake components, comprising a composite in which one or more friction modifiers is embedded in a high strength cement matrix. The matrix material exhibits a flexural strength of at least 1,500 psi, a compressive strength of at least about 15,000 psi and a flexural modulus of about 1. times. 10. sup. 6 psi.

57832978, Jul 21, 1998

Aug 16, 1995

8/515734

Sean Wise - Millersville MD
Claudio J. Herzfeld - Suitland MD

Cemcom Corporation - Baltimore MD

B32B 326

4283044

Materials with exceptional shock attenuating properties are chemically bonded ceramics having densities that range from 30 to 160 lb/cubic foot (0. 48 to 2. 56 g/cc) and porosities of 20% to 80%. The materials are chemically bonded ceramic composites based on Portland cement, silica fume, various hollow fillers, and may include a dispersing agent, any of a variety of fibers and water.

45992118, Jul 8, 1986

Nov 21, 1984

6/673843

Sean Wise - Millersville MD
Mark L. MacKenzie - Laurel MD

Research One Limited Partnership - Towson MD

C04B 4000

264 82

The strength of the stainless steel containing cementitious composite material of U. S. Pat. No. 4,482,385 is improved by curing it according to a specific schedule which includes the steps of curing in a mold, steam curing after demolding, slow drying and dry thermal curing.

48910716, Jan 2, 1990

Nov 21, 1984

6/673841

Randall P. Bright - Bowie MD
Sean Wise - Millersville MD
Mark L. MacKenzie - Laurel MD

Cemcom Corporation - Lanham MD

C04B 2400
C04B 2804

106 90

The temperatures at which the cementitious composite materials described in U. S. Pat. No. 4,482,385 can be used as tool or mold materials are extended by a treatment which comprises heating said composite materials to a temperature sufficient to expel free and adsorbed water from the concrete portion of the cementitious composite and thereafter refilling the resulting pores with an organic monomer or prepolymer and then crosslinking said impregnant to form an organic polymeric network in the inorganic composite material.

47801417, Oct 25, 1988

Dec 23, 1986

6/945632

David D. Double - Annapolis MD
Sean Wise - Millersville MD

CEMCOM Corporation - Lanham MD

C04B 1448
B28B 734

106 383

Cementitious composite materials having high strength, vacuum integrity, good thermal properties and low coefficient of thermal expansion are prepared from a mixture of (1) a high strength cement matrix, and (2) a filler component, comprising a metal fiber. These composites are useful in the manufacture of molds and tools for forming metals and plastics. A preferred composite mixture comprising Portland cement, chemically reactive silica particles, inorganic oxide particles, a cement superplasticizer, an irregularly shaped aggregate, metal fibers, and water. The mixtures preferably contain chemically reactive silica fume particles and reactive silica particles such as crystalline silica or quartz particles or a vitreous/glassy form of silicon. The mixtures preferably comprise stainless steel fibers and stainless steel aggregate. High nickel steel and silicon carbide can be used as aggregate in applications requiring low coefficient of thermal expansion.