Pravin Mistry

56481276, Jul 15, 1997

Jun 5, 1995

8/465589

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

C23C 1644
C08J 718

427596

Energy, such as from one or more lasers, is directed at the surface of a substrate to mobilize and vaporize a constituent element (e. g. , carbide) within the substrate (e. g. , steel). The vaporized constituent element is reacted by the energy to alter its physical structure (e. g. , from carbon to diamond) to that of a composite material which is diffused back into the substrate as a composite material. An additional secondary element, which can be the same as or different from the constituent element, may optionally be directed (e. g. , sprayed) onto the substrate to augment, enhance and/or modify the formation of the composite material, as well as to supply sufficient or additional material for fabricating one or more coatings on the surface of the substrate. The process can be carried out in an ambient environment (e. g. , without a vacuum), and without pre-heating or post-cooling of the substrate.

56352433, Jun 3, 1997

Jun 5, 1995

8/464448

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

C23C 1644
C08J 718

427248

Energy, such as from one or more lasers, is directed at the surface of a substrate to mobilize and vaporize a constituent element (e. g. , carbide) within the substrate (e. g. , steel). The vaporized constituent element is reacted by the energy to alter its physical structure (e. g. , from carbon to diamond) to that of a composite material which is diffused back into the substrate as a composite material. An additional secondary element, which can be the same as or different from the constituent element, may optionally be directed (e. g. , sprayed) onto the substrate to augment, enhance and/or modify the formation of the composite material, as well as to supply sufficient or additional material for fabricating one or more coatings on the surface of the substrate. The process can be carried out in an ambient environment (e. g. , without a vacuum), and without pre-heating or post-cooling of the substrate.

55544150, Sep 10, 1996

Jan 18, 1994

8/182978

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

C23C 1644
C08J 718

4272481

Energy, such as from one or more lasers, is directed at the surface of a substrate to mobilize and vaporize a constituent element (e. g. , carbide) within the substrate (e. g. , steel). The vaporized constituent element is reacted by the energy to alter its physical structure (e. g. , from carbon to diamond) to that of a composite material which is diffused back into the substrate as a composite material. An additional secondary element, which can be the same as or different from the constituent element, may optionally be directed (e. g. , sprayed) onto the substrate to augment, enhance and/or modify the formation of the composite material, as well as to supply sufficient or additional material for fabricating one or more coatings on the surface of the substrate. The process can be carried out in an ambient environment (e. g. , without a vacuum), and without pre-heating or post-cooling of the substrate.

56207549, Apr 15, 1997

Jan 21, 1994

8/184041

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

B05D 306
C21D 100

427554

Energy, such as from one or more lasers, is directed at the surface of a substrate to mobilize and vaporize a constituent element (e. g. , carbide) within the substrate (e. g. , steel). The vaporized constituent element is reacted by the energy to alter its physical structure (e. g. , from carbon to diamond) to that of a composite material which is diffused back into the substrate as a composite material. An additional secondary element, which can be the same as or different from the constituent element, may optionally be directed (e. g. , sprayed) onto the substrate to augment, enhance and/or modify the formation of the composite material, as well as to supply sufficient or additional material for fabricating one or more coatings on the surface of the substrate. The process can be carried out in an ambient environment (e. g. , without a vacuum), and without pre-heating or post-cooling of the substrate.

59649631, Oct 12, 1999

Jun 5, 1995

8/465266

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI
Shengzhong Liu - Canton MI

B23K 3526

148 22

Thermal stresses normally associated with brazing are alleviated by a low temperature brazing technique of the present invention. A low-temperature brazing paste, preferably suitable to be melted at temperatures of no greater than 200. degree. C. (e. g. , 100-200. degree. C. ), containing nanoscale (. ltoreq. 100 nanometer) size particles of gold, cadmium, copper, zinc, tin, lead, silver, silicon, chromium, cobalt, antimony, bismuth, aluminum, iron, magnesium, nitrogen, carbon, boron, and alloys and composites of these materials, is applied as a bead or as a powder spray at the junction of two components desired to be joined together. Energy from a source such as a laser beam (for example a CO. sub. 2 laser, an Nd-Yag laser or an excimer laser), flame, arc, plasma, or the like, is "walked" along the brazing material. The energy beam is sufficient to cause melting and re-crystallization of the nanoscale-particle-containing brazing paste.

56436416, Jul 1, 1997

Jun 5, 1995

8/465583

Manuel C. Turchan - Northville MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

C23C 1428
C23C 1648

427595

Energy, such as from one or more lasers, is directed at the surface of a substrate to mobilize and vaporize a constituent element (e. g. , carbide) within the substrate (e. g. , steel). The vaporized constituent element is reacted by the energy to alter its physical structure (e. g. , from carbon to diamond) to that of a composite material which is diffused back into the substrate as a composite material. The method of the present invention includes the additional steps of using the energy to move a carbon constituent element in a sub-surface zone of the substrate towards the surface of the substrate, vaporizing selected amounts of the carbon constituent element to produce a vaporized carbon constituent element, reacting the vaporized carbon constituent element to modify its physical structure and properties, reacting the vaporized carbon constituent element to modify its physical structure and properties, and fabricating the diamond coating from the reacted vaporized carbon constituent element.

55165001, May 14, 1996

Aug 9, 1994

8/287726

Shengzhong Liu - Dearborn Heights MI
Pravin Mistry - Shelby Township MI

QQC, Inc. - Dearborn MI

C30B 2904

423446

Diamond materials are formed by sandwiching a carbon-containing material in a gap between two electrodes. A high-amperage electric current is applied between the two electrode plates so as cause rapid-heating of the carbon-containing material. The current is sufficient to cause heating of the carbon-containing material at a rate of at least approximately 5,000. degree. C. /sec, and need only be applied for a fraction of a second to elevate the temperature of the carbon-containing material at least approximately 1000. degree. C. Upon terminating the current, the carbon-containing material is subjected to rapid-quenching (cooling). This may take the form of placing one or more of the electrodes in contact with a heat sink, such as a large steel table. The carbon-containing material may be rapidly-heated and rapidly-quenched (RHRQ) repeatedly (e. g. , in cycles), until a diamond material is fabricated from the carbon-containing material.

20140377476, Dec 25, 2014

Dec 22, 2013

14/138109

Pravin Mistry - Dearborn MI, US

D06M 10/02
D06M 10/00

427535, 118620, 21912159, 21912136

Material treatment is effected in a treatment region by at least two energy sources, such as (i) an atmospheric pressure (AP) plasma and (ii) an ultraviolet (UV) laser directed into the plasma and optionally onto the material being treated. During processing, the material being treated may remain substantially at room temperature. Precursor materials may be dispensed before, and finishing material may be dispensed after treatment. Precursors may be combined in the plasma, allowing for in situ synthesis and dry treatment of the material. Electrodes (e, e) for generating the plasma may comprise two spaced-apart rollers which, when rotating, advance the material through a treatment region. Nip rollers adjacent the electrode rollers define a semi-airtight cavity, and may have a metallic outer layer. Loose fibers and fragile membranes may be supported on a carrier membrane, which may be doped. Individual fibers may be processed. Electrostatic deposition may be performed. Topographical changes may be effected. Various laser configurations and parameters are disclosed.