Howard M Winkelbauer

US Patent:

7754633, Jul 13, 2010

Filed:

Jul 22, 2008

Appl. No.:

12/177249

Inventors:

H. David Prior - Bethel Park PA, US
Howard Winkelbauer - Munhall PA, US
Viktor Fischer - Coraopolis PA, US

Assignee:

Harbison-Walker Reeractories Company - Moon Township PA

International Classification:

C04B 35/00

US Classification:

501132, 501127

Abstract:

A refractory composition comprising at least 50 weight percent chromic oxide (CrO), as measured by chemical analysis. The composition includes fused chromia-containing grain, powdered chromic oxide and sintered chromia-containing grain. The fused chromia-containing grain and the sintered chromia-containing grain comprise at least 50 weight percent chromia oxide, as measured by chemical analysis.

US Patent:

48104159, Mar 7, 1989

Filed:

Sep 10, 1986

Appl. No.:

6/905803

Inventors:

Howard M. Winkelbauer - McKeesport PA
Glenn A. Moore - Junction City OR

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C01B 3312
C01B 3318
C09K 300

US Classification:

25218313

Abstract:

High purity silica powder formed from a sol-gel process is made from a quantity of an industrial grade hydrolizable silicon organometallic substance mixed with a quantity of an industrial grade organic solvent miscible in said organometallic substance and with a quantity of an acidified water having a pH less than 2 to form a solution. The solution is heated, then dried to form a gel, milled, and calcined to form the pure silica powder and the pure powder used to form encapsulated micro-miniature circuits.

US Patent:

46006079, Jul 15, 1986

Filed:

Jan 10, 1985

Appl. No.:

6/690280

Inventors:

Ke-Chin Wang - Pittsburgh PA
Eugene T. Rushe - Port Vue PA
Howard M. Winkelbauer - McKeesport PA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

B05D 102

US Classification:

427421

Abstract:

A coating for a substrate includes a mix comprising sodium silicate, water and sialon powder. A defoaming agent is also added to the mix.

US Patent:

44605285, Jul 17, 1984

Filed:

May 12, 1981

Appl. No.:

6/263390

Inventors:

Daniel R. Petrak - Lynchburg VA
Howard M. Winkelbauer - West Mifflin PA
Thomas R. Kleeb - Pittsburgh PA
Ke-Chin Wang - Upper St. Clair PA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C04B 3502
C04B 3544

US Classification:

264 65

Abstract:

A means for producing nitride bonded refractory shapes, in situ, by mixing an aluminum metal powder, relatively pure silica, crude clay and a refractory aggregate. The mixes are pressed into shapes and burned at elevated temperatures in a nitriding atmosphere to form the bond.

US Patent:

51889897, Feb 23, 1993

Filed:

Dec 1, 1987

Appl. No.:

7/127268

Inventors:

Howard M. Winkelbauer - McKeesport PA
Eugene T. Rushe - Port Vue PA

Assignee:

Dresser Industries - Dallas TX

International Classification:

C03C 804

US Classification:

501 17

Abstract:

An oxidation-resistant carbon-containing refractory shape having on the surface thereof exposed to oxidation an oxidation-resistant glaze coating, said glaze coating consisting essentially of the reaction product of a zinc borosilicate frit and a clay; and the method of forming said coating on a refractory shape comprising applying to at least a portion of the shape an aqueous suspension of a fluxed mix consisting essentially of a zinc borosilicate and a clay, drying said coating, and firing said coated refractory shape at a temperature and for a time sufficient to cause the borosilicate and clay in said mix to react and form a substantially uniform glaze coating.

US Patent:

45336466, Aug 6, 1985

Filed:

May 24, 1984

Appl. No.:

6/613941

Inventors:

Ke-Chin Wang - Pittsburgh PA
Howard M. Winkelbauer - Mifflin PA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C04B 3558
C04B 3518
C04B 3510

US Classification:

501 97

Abstract:

This invention relates to a method for producing nitride bonded refractory shapes in which the bonding matrix is formed in situ. The method comprises forming a batch including a coarser portion selected from the group calcined and fused aggregates of alumina, aluminosilicate, and magnesium aluminate spinel and a finer portion consisting essentially of finely divided silicon metal and alumina as well as fines of the above mentioned refractory aggregate needed to achieve the desired screen analysis. The silicon metal and alumina react in the nitriding atmosphere to form a low porosity matrix generally comprising silicon oxynitride with corundum distributed therethrough.

US Patent:

53607732, Nov 1, 1994

Filed:

Jul 28, 1993

Appl. No.:

8/098468

Inventors:

Howard M. Winkelbauer - Boston PA
Harold F. Gallman - Cartersville GA

Assignee:

Indresco Inc. - Dallas TX

International Classification:

C04B 3516

US Classification:

501133

Abstract:

A refractory mix for forming a fused silica based refractory shape consisting essentially of a high purity fused silica and a binder system consisting essentially of a high purity colloidal silica solution and a high purity ammonium lignosulfonate. The invention also comprises fused silica based refractory shapes formed from such mix by pressing and firing.

US Patent:

45006440, Feb 19, 1985

Filed:

Dec 19, 1983

Appl. No.:

6/562770

Inventors:

Howard M. Winkelbauer - West Mifflin PA
Kenneth W. Hill - Lynchburg VA
Ke-Chin Wang - Pittsburgh PA

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

C04B 3558

US Classification:

501 98

Abstract:

Dense sialon grain is produced by briquetting mixtures of micronized silicon and reactive alumina. Sialon powder is produced by ball milling the briquettes after nitriding. The starting mixtures can contain from 10 to 38% reactive alumina with the balance of the mixture micronized silicon. Mixtures made within this range when pressed into dense briquettes and nitrided produce useful sialon grain having minimal free alumina contamination.