William Scott Johnson
Medical Practice in Newark, DE

5098870, Mar 24, 1992

Jul 23, 1990

7/557332

Terry D. Claar - Newark DE
William B. Johnson - Newark DE

Lanxide Technology Company, LP - Newark DE

C04B 3510

501 87

This invention relates generally to a novel method of preparing self-supporting bodies and to the novel products made thereby. In its more specific aspects, this invention relates to a method of producing self-supporting bodies having controlled porosity and graded properties and comprising one or more boron-containing compounds, e. g. , a boride or a boride and a carbide. The method comprises, in one embodiment, reacting a powdered parent metal, in molten form, with a bed or mass comprising a boron carbide material and, optionally, one or more inert fillers, to form the body. In another embodiment, both of a powdered parent metal and a body or pool of molten parent metal are induced to react with a bed or mass comprising a boron carbide material and, optionally, one or more inert fillers. in addition, combustible additives (e. g. , gelatin, corn starch, wax, etc.

5232040, Aug 3, 1993

Nov 15, 1991

7/794607

William B. Johnson - Newark DE
James C. Wang - Newark DE

Lanxide Technology Company, LP - Newark DE

B22D 1902, B22D 1914

164 91

This invention relates generally to a novel method for removing metal from a formed self-supporting body. A self-supporting body is made by reactively infiltrating a molten parent metal into a bed or mass containing a boron source material and a carbon source material (e. g. , boron carbide) and/or a boron source material and a nitrogen source material (e. g. , boron nitride) and, optionally, one or more inert fillers. Once the self-supporting body is formed, it is then placed, at least partially, into contact with another material which causes metallic constituent contained in the self-supporting body to be at least partially removed.

4885130, Dec 5, 1989

Jan 13, 1989

7/296771

Terry D. Claar - Newark DE
Steven M. Mason - Norwood PA
Kevin P. Pochopien - Newark DE
Danny R. White - Elkton MD
William B. Johnson - Newark DE

Lanxide Technology Company, LP - Newark DE

B22T 100

419 12

Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron carbide material which may contain one or both of a boron donor material and a carbon donor material. The reactive infiltration typically results in a composite comprising a boron-containing compound, a carbon-containing compound and residual metal, if desired. The mass to be infiltrated may contain one or more inert fillers admixed with the boron carbide material, boron-containing compound and/or carbon-containing compound. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic, metal, ratios of one ceramic to another and porosity.

5520880, May 28, 1996

Sep 19, 1994

8/307649

William B. Johnson - Newark DE
Eugene S. Park - Hockessin DE
Gerhard H. Schiroky - Hockessin DE
Danny R. White - Elkton MD
Terry D. Claar - Newark DE

Lanxide Technology Company, LP - Newark DE

B22F 700

419 45

This invention relates to a method for producing a self-supporting body comprising the steps of: (a) forming a permeable mass comprising at least one solid-phase oxidant selected from the group consisting of the halogens, sulphur and its compounds, metals, metal oxides other than the silicates, and metal nitrides other than those of boron and silicon; (b) orienting said permeable mass and a source of said parent metal relative to each other so that formation of said oxidation reaction product will occur into said permeable mass; (c) heating said source of parent metal to a temperature above the melting point of said parent metal but below the melting point of said oxidation reaction product to form a body of molten parent metal; (d) reacting said body of molten parent metal with said at least one solid-phase oxidant at said temperature to permit said oxidant at said temperature to permit said oxidation reaction product to form; and (e) maintaining at least a portion of said at least one oxidation reaction product in contact with and between said molten parent metal and said solid-phase oxidant at said temperature to progressively draw molten parent metal through said oxidation reaction product towards said solid-phase oxidant to permit fresh oxidation reaction product to continue to form at an interface between said solid-phase oxidant and previously formed oxidation reaction product that has infiltrated said permeable mass.

5947918, Sep 7, 1999

May 4, 1998

9/071943

Carl H. Jones - Katy TX
William B. Johnson - Newark DE
John M. Blaha - Chesapeake City MD

Gore Enterprise Holdings, Inc. - Newark DE

A61F 1300

602 58

An impact energy absorbing composite material of expanded polytetrafluoroethylene (ePTFE) and an elastomer is disclosed. The composite is comprised of at least one layer of expanded polytetrafluoroethylene and at least one layer of an elastomer. The individual layer thicknesses of the ePTFE and elastomer are controlled to achieve superior high energy impact resistance. The invention herein provides a material having performance that also can be tailored to meet other design needs for a given application, for example, space considerations or comfort.

5436208, Jul 25, 1995

Apr 25, 1994

8/233144

William B. Johnson - Newark DE

Lanxide Technology Company, LP - Newark DE

C04B 35565

501 88

This invention broadly relates to methods for producing self-supporting silicon carbide and silicon carbide composite bodies. More particularly, this invention relates to silicon carbide and silicon carbide composites, grown by the oxidation reaction of a silicon metal with a gas comprising at least one gas selected from the group consisting of fluorinated hydrocarbon gases, chlorohydrocarbon gases, and chlorofluorocarbon gases.

5350003, Sep 27, 1994

Jul 9, 1993

8/090352

Birol Sonuparlak - Newark DE
William B. Johnson - Newark DE
Ali S. Fareed - Wilmington DE

Lanxide Technology Company, LP - Newark DE

B22D 1902, B22D 1914

164 91

The present invention relates to a novel process for removal of at least a portion of at least one metallic component of a metallic constituent from a multi-phase composite body. Particularly, by providing at least one of an infiltration enhancer or an infiltration enhancer precursor or an infiltrating atmosphere to be in communication with a permeable mass, which contacts at least a portion of a composite body, said metallic component of the composite body, when made molten, is caused to spontaneously infiltrate the permeable mass. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum. The metallic constituent is essentially leached or removed from the multi-phase body by spontaneous infiltration.

2013020, Aug 8, 2013

Mar 14, 2013

13/826590

W. L. Gore & Associates, Inc. - Newark DE, US
Jack J. Hegenbarth - Wilmington DE, US
Rachel Radspinner - Newark DE, US
Paul D. Drumheller - Flagstaff AZ, US
William B. Johnson - Newark DE, US
Wen Liu - Newark DE, US
Xin Kang Chen - Shanghai, CN

W. L. Gore & Associates, Inc. - Newark DE

C08F 214/26

521 505, 521145

A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.

5299621, Apr 5, 1994

Sep 19, 1991

7/762163

Terry D. Claar - Newark DE
Gerhard H. Schiroky - Hockessin DE
Donald P. Ripa - North East MD
William B. Johnson - Newark DE

Lanxide Technology Company, LP - Newark DE

B22D 1900

164 98

This invention relates generally to a novel method of preparing self-supporting bodies, and novel products made thereby. In its more specific aspects, this invention relates to a method for producing self-supporting bodies comprising one or more boron-containing compounds, e. g. , a boride or a boride and a carbide, by reactive infiltration of molten parent metal into a preform comprising boron carbide or a boron donor material combined with a carbon donor material and, optionally, one or more inert fillers, to form the body. Specifically, a boron carbide material or combination of a boron donor material and a carbon donor material, and in either case, optionally, one or more inert fillers, are sedimentation cast, slip cast or pressed onto or into a body and into a particular desired shape.

5356720, Oct 18, 1994

May 28, 1993

8/068567

David K. Creber - Kingston, CA
William B. Johnson - Newark DE
Marc S. Newkirk - Newark DE

Lanxide Technology Company, LP - Newark DE

C04B 3565

428545

The present invention relates to self-supporting ceramics or ceramic composite bodies which include a polycrystalline ceramic material comprising the oxidation reaction product of a silicon parent metal with a nitrogenous oxidant, including a nitrogenous vapor-phase oxidant, and optionally, one or more metallic constituents dispersed throughout the polycrystalline ceramic material. A barrier means comprising, for example, at least one of titanium nitride, zirconium nitride, aluminum nitride and boron nitride or a barrier means that has undergone chemical changes or alterations may be removably attached to the self-supporting ceramics or ceramic composite bodies of the present invention.