Juergen Omeis, Norbert Rau, Michael Kunesch: Process for producing anisotropic liquid crystal layers on a substrate. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, September 21, 1993: US05247377 (214 worldwide citation)

A process for producing thin, anisotropic layers composed of liquid crystalline substances, the liquid crystalline substances being applied in a thin layer to one side of a support having a surface prestructured in such a way that the structure is given a preferred direction which determines orienta ...

Hans Lorenz, Heinz Gross, Roland Schuchmann, Helmut Haring: Process and system for producing multi-layer extrudate. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, November 19, 1991: US05066435 (49 worldwide citation)

For producing a multi-extrudate of thermoplastically processable plastic, a coextrusion adapter block has a multi-part slide having a plurality of side-by-side slide sections mutually spaced in a direction transverse to the flow direction and slidably fitted in the adapter block for movement to adju ...

Jens Dieter Fischer, Werner Siol: Transparent, thermoplastically processable polymer blends made of an aromatic polycarbonate and a methyacrylate polymer. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, March 6, 1990: US04906696 (48 worldwide citation)

Transparent, thermoplastically processable polymer blends of (A) polycarbonates, especially Bisphenol A polycarbonates, and (B) methyacrylate copolymers are disclosed. They are prepared from 95 to 5 wt. % methyl methacrylate and 5 to 95 wt. % methacrylic esters and optionally 0 to 30 wt. % especiall ...

Hans Ulrich Petereit, Erna Roth: Water-soluble pressure-sensitive skin-adhesive and use thereof. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, July 28, 1992: US05133970 (43 worldwide citation)

A water-soluble salt of a copolymer containing a monoethylenically unsaturated monomer containing amino groups that can be radically polymerized and at least one alkyl ester of acrylic and/or methacrylic acid, is used as a flexible pressure-sensitive adhesive for application to the skin.

Henning Buchold, Rudolf Boensch, Joerg Schroeppel: Process for enzymatically degumming vegetable oil. Metallgesellschaft Aktiengesellschaft, Rohm Chemische Fabrik, Herbert Dubno, September 24, 1996: US05558781 (43 worldwide citation)

A process is disclosed for enzymatically degumming vegetable oil where the vegetable oil to be degummed is adjusted to a pH from 3 to 6 and is mixed with an aqueous enzyme solution, which contains one of the enzymes phospholipase A1, A2 or B. In a degumming reactor the enzymes are permitted to act o ...

Jens Dieter Fischer, Manfred Munzer, Ursula Golchert, Felix Schinzel: Methacrylate protective coating containing a UV-absorber for polycarbonate. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, October 29, 1991: US05061558 (39 worldwide citation)

Multilayered plastic objects are prepared having a core layer of an aromatic polycarbonate in contact with a polymethacrylate film containing a UV absorber. The polymethacrylate film comprises a copolymer of methylmethacrylate and an acrylic or methacrylic ester, (meth)acrylamide, maleimide or mixtu ...


Manfred Eich, Joachim Wendorff, Bernd Reck: Process for the reversible optical storage of data. Rohm Chemische Fabrik, Oblon Fisher Spivak McClelland & Maier, June 6, 1989: US04837745 (34 worldwide citation)

The invention concerns a process for reversible optical information storage by means of a liquid crystal storage medium, whereby the information is stored in a firm of a liquid crystal side chain polymer in an anisotropic phase by means of locally acting heat source in combination with an electric, ...

Joachim Knebel, Klaus Lehmann: Method of increasing the molecular weight in the manufacture of polysuccinimide. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, August 25, 1992: US05142062 (34 worldwide citation)

A method of manufacturing polysuccinimides with molecular weights in the range 100,000 to about 200,000 by polycondensation of aspartic acid, with phosphoric acids as condensation agents, in at least two process stages, at temperatures of 100.degree.-250.degree. C. and under reduced pressure, where ...

Manfred Eich, Norbert Rau, Joachim Wendorff: Optical data storage apparatus and method utilizing an amorphous polymer which exhibits photochromic properties. Rohm Chemische Fabrik, Oblon Spivak McClelland Maier & Neustadt, June 11, 1991: US05023859 (34 worldwide citation)

A device for reversible optical data storage, comprising polymer film, the film comprising an amorphous polymer capable of photochromic isomerization, whereby data is reversibly stored in said polymer film and may be read by illuminating the isomerized polymer film with a light source.