Richard P Beaver, Age 71226 Liberty Blvd, Canonsburg, PA 15317

4657742, Apr 14, 1987

Jul 1, 1985

6/750445

Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

B01J 1900
B01D 2910

422240

A packed tube of generally parallel aligned fibers is described, wherein the fibers are packed therein at densities of 60 to 100 percent of the theoretical packing density based on the fiber diameters used based on the selected fiber pitch pattern and preferably at 70 to 100 percent of the theoretical. Glass fibers which can be porous and/or hollow are preferred.

4778499, Oct 18, 1988

Jun 19, 1986

6/876321

Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

C03C 2506

65 2

Porous, hollow, silica-rich fibers with good alkaline tolerance are produced from hollow glass fibers of an alkali metal borosilicate glass having one or more oxides of a metal of Group IV of the Periodic Table in an amount of about 1 to about 20 weight percent of the glass composition. The hollow porous silica-rich fibers are produced by acid leaching where the hollow glass fibers have greater than 25 weight percent extractable components, less than 25 weight percent extractable components but a wall thickness of less than 15 microns, or less than 25 weight percent extractable components and a fiber diameter of less than 25 microns. In addition, heat treating can be used for hollow glass fibers having greater than 25 weight percent extractable components to enlarge the pores.

4715105, Dec 29, 1987

Apr 16, 1986

6/852866

Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

B32P 1700

29419G

A packed tube of generally parallel aligned fibers is described, wherein the fibers are packed therein at densities of 60 to 100 percent of the theoretical packing density based on the fiber diameters used based on the selected fiber pitch pattern and preferably at 70 to 100 percent of the theoretical. Glass fibers which can be porous and/or hollow are preferred.

4966613, Oct 30, 1990

Nov 30, 1984

6/677106

Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

C03B 37075
C03B 1910
C03C 1500

65 2

Porous glass shapes with effective pores are produced by a method which also reduces the frequency of breakage of the glass shapes. The method includes: producing a plurality of the glass shapes, depositing a fluid chemical treatment with one or more carbonaceous materials on a substantial portion of the surfaces of the glass shapes, heat treating the glass shapes to phase separate components of the glass, leaching the phase separated glass shapes to remove leachable components to produce pores in the glass shapes, and removing any residual carbonaceous material. The various forms of glass shapes include particles, platelets, flakes, beads, fibers both solid and hollow, tubes and capillaries, which are essentially free of carbonaceous material.

4589898, May 20, 1986

Dec 17, 1984

6/682400

Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

C03B 3702

65 12

A method of cleaning glass volatile contaminants from the surfaces of heat transfer fins in a fin cooler of a glass fiber forming bushing assembly is disclosed. A cleaning liquid which is a dilute alcohol solution in which the alcohol is selected from the group consisting of primary and second alcohols is sprayed in a generally flat, fan shapes spray against the side and top surfaces of the cooling fins. This spray of a dilute alcohol solution removes the contaminants from the fin surfaces while not adversely affecting the glass fiber filaments being formed during running of the bushing assembly. A solution of between 0. 1 to 1. 0% methanol or ethylene glycol in water has been found to be particularly satisfactory in removing boron oxide contaminants from the fin surfaces.

5354829, Oct 11, 1994

Jun 30, 1992

7/906960

Robert G. Swisher - Pittsburgh PA
Richard P. Beaver - Library PA
Robert G. Briody - Apollo PA
Louis J. Nehmsmann - Apollo PA

PPG Industries, Inc. - Pittsburgh PA

C08G 7700

528 10

A polymeric reaction product is disclosed that is a silylated polyamine-containing polymer having moieties from fatty acid moieties and/or chain extenders as difunctional organo moieties and free amine moieties and hydrolyzed and/or hydrolyzable organofunctional silane moieties and that is at least water dispersible. The reactants that produce this product are a polyamine-containing polymer with fatty acid moieties and free amine moieties and at least one amine-reactable organo functional alkoxysilane or its hydrolysis products. The former reactant results from the reaction of a polyamine-containing polymer with free amine moieties with fatty acids alone or in mixtures with other fatty acids and/or dimer acids. The polymeric reaction product is combined with a predominant amount of water to form a fiber treating formulation that can reside on the surface of one or more treated fibers.

4566890, Jan 28, 1986

Dec 17, 1984

6/682401

Jonathan E. Hostler - Verona PA
Richard P. Beaver - Library PA

PPG Industries, Inc. - Pittsburgh PA

C03B 3702

65 12

A self purging fin cooler for use with a glass fiber forming bushing assembly is disclosed. A fin cooler header block is provided with a flow channel for coolant flow and a separate flow channel for cleaning liquid flow. A plurality of cleaning liquid distribution passages extend from the cleaning liquid flow channel to spray nozzles positioned between adjacent cooling fins that extend outwardly from the header block. Each spray nozzle produces a flat, fan shaped spray of cleaning liquid which removes contaminants that accumulate on the tops and sides of the cooling fins. A flow control valve assembly and frequency and duration timers are utilized to provide a controllable cleaning liquid spray frequency and duration. During non-spray periods a low volume of cleaning liquid to the spray nozzles insures that the nozzles will not become clogged.

4748121, May 31, 1988

Nov 30, 1984

6/677108

Richard P. Beaver - Library PA
Ronald E. Betts - Turtle Creek PA
Lin-Chang Chiang - Export PA
George V. Sanzero - New Kensington PA

PPG Industries, Inc. - Pittsburgh PA

C12N 1100
C12N 1114
G01N 33552
C07K 1714

435176

Biochemically active material is immobilized on porous silica-rich glass fibers having a diameter of about 3 to 150 microns, a length of about 0. 03 inch to continuous fiber length, a mean pore diameter in the range of about 10 to 3000 angstroms, a pore volume of about 0. 5 to 1. 5 cc/gm and a surface area of about 10 to 600 m. sup. 2 /gm. The porous glass fibers are preferably formed from a composition containing greater than 35 up to 60 weight percent B. sub. 2 O. sub. 3, about 1 to 10 weight percent alkali metal oxides, about 30 to 65 weight percent SiO. sub. 2, up to about 5 weight percent ZrO. sub. 2, and up to about 4 weight percent Al. sub. 2 O. sub. 3. Fibers having the composition are heated to cause phase separation into a boron-rich phase and a silica-rich phase, and are then treated by water and acid leaching to produce the porous glass fibers. A biochemically active material is attached to the fibers by absorption or by covalent bonding with a linking agent.