Leonard H Singer Deceased2201 Acacia Park Dr, Cleveland, OH 44124

3991170, Nov 9, 1976

Jun 20, 1975

5/588845

Leonard Sidney Singer - Berea OH

Union Carbide Corporation - New York NY

C01B 3104
C10C 300

423449

Mesophase pitches wherein the planes of the mesophase portions of the pitch are substantially aligned in a single parallel direction, and the c-axes of said planes are substantially aligned in a single parallel direction, are produced by subjecting a mesophase pitch in its molten state to rotational motion relative to a surrounding magnetic field about an axis perpendicular to the direction of that field.

5631086, May 20, 1997

Jun 7, 1995

8/478716

Leonard S. Singer - Berea OH
David T. Orient - Medina OH

Amoco Corporation - Chicago IL

B32B 900
H01B 104
C10C 120

428408

Filled thermoplastic pitch comprising particulate filler and advanced mesophase pitch having a TMA deformation temperature of at least 400. degree. C. , and a method for the manufacture thereof. The filled thermoplastic pitch may be shaped and densified in one or more thermoforming operations. The resulting preform may be thermoset and carbonized in ordinary baking operations without requiring molds and pressurized vessels.

4891203, Jan 2, 1990

Jun 28, 1985

6/750532

Leonard S. Singer - Berea OH
David T. Orient - Medina OH

Union Carbide Corporation - Danbury CT

C01B 3100
C01B 3102
C01B 3104
C09C 148

423449

An anisotropic carbonaceous body is produced by plastically deforming a pitch-based semicoke at elevated temperature to align the internal structure. The semicoke may be carbonized and graphitized while retaining its anisotropic properties.

4455527, Jun 19, 1984

Jun 29, 1982

6/393391

Leonard S. Singer - Berea OH

Union Carbide Corporation - Danbury CT

G01R 3308

324316

A magnetic resonance apparatus uses a first harmonic signal produced by magnetic field modulation as a correction signal and the second harmonic signal to provide a property of a sample.

3976729, Aug 24, 1976

Dec 11, 1973

5/423718

Irwin Charles Lewis - Lakewood OH
Edgar Ronald McHenry - Berea OH
Leonard Sidney Singer - Berea OH

Union Carbide Corporation - New York NY

B29C 2500

264 297

An improved process for producing carbon fibers from pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, carbon fibers are produced from pitch wherein the mesophase content of the pitch has been formed while agitating the pitch so as to produce a homogeneous emulsion of the immiscible mesophase and non-mesophase portions of the pitch. Mesophase pitches prepared in this manner have been found to possess a lesser amount of high molecular weight molecules in the mesophase portion of the pitch and a lesser amount of low molecular weight molecules in the non-mesophase portion of the pitch, and thus a smaller differential between the average molecular weights of the mesophase and non-mesophase portions of the pitch, than mesophase pitches having the same mesophase content which have been prepared in the absence of such agitation. BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an improved process for producing carbon fibers from pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state.

4729689, Mar 8, 1988

Dec 13, 1984

6/680995

Faramarz Nazem - Strongsville OH
Irwin C. Lewis - Strongsville OH
Leonard S. Singer - Berea OH
George S. Chryssomallis - Golden Valley MN

Union Carbide Corporation - Danbury CT

H05B 714

403267

An electrode member comprising an electrode body having cementing pitch adhered to and impregnated within at least a portion of its electrode joint surface. Also a process for producing an electrode joint comprising applying a cement which is a solution/slurry of cementing pitch in nonaqueous organic solvent to at least a portion of the mating surfaces of such electrode joint.

4017327, Apr 12, 1977

Oct 31, 1974

5/519761

Irwin Charles Lewis - Lakewood OH
Edgar Ronald McHenry - Berea OH
Leonard Sidney Singer - Berea OH

Union Carbide Corporation - New York NY

C08L 9500

106273R

An improved process for producing pitch which is transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, the mesophase content of the pitch is formed while agitating the pitch so as to produce a homogeneous emulsion of the immiscible mesophase and non-mesophase portions of the pitch. Mesophase pitches prepared in this manner have been found to possess a lesser amount of high molecular weight molecules in the mesophase portion of the pitch and a lesser amount of low molecular weight molecules in the non-mesophase portion of the pitch, and thus a smaller differential between the average molecular weights of the mesophase and non-mesophase portions of the pitch, than mesophase pitches having the same mesophase content which have been prepared in the absence of such agitation.

4005183, Jan 25, 1977

Mar 5, 1973

5/338147

Leonard Sidney Singer - Berea OH

Union Carbide Corporation - New York NY

C01B 3107

4234472

High modulus, high strength carbon fibers, having a highly oriented structure characterized by the presence of carbon crystallites preferentially aligned parallel to the fiber axis, are produced from carbonaceous pitches which have been transformed, in part, to a liquid crystal or so-called "mesophase" state. When heated to graphitizing temperatures, these fibers develop the three-dimensional order characteristic of polycrystalline graphite.