Patents by Inventor Eva Rissel
Eva Rissel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5973202Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative of the following structure: ##STR1## with D=O, S, or NH and where R* is the parent body of the dicarboxylic acid and at least one of the groups R.sup.1 and R.sup.2 is CN or NO.sub.2.Type: GrantFiled: August 28, 1996Date of Patent: October 26, 1999Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne, Eva Rissel, Kurt Geibel
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Patent number: 5777066Abstract: A method for producing poly-o-hydroxy amides by conversion of an activated dicarboxylic acid derivative with a bis-o-aminophenol. A solution of the activated dicarboxylic acid derivative is added to a solution of the bis-o-aminophenol in a lactone, and a tertiary amine is added to the resulting mixture, wherein the lactone has the following structure: ##STR1## where A is--(CR.sup.1 R.sup.2).sub.m --or--(CR.sup.3 R.sup.4).sub.n --NR.sup.5 --,R.sup.1 to R.sup.5 are independent of one anotherR.sup.1 and R.sup.2 are hydrogen, alkyl with 1 to 7 carbon atoms (linear or branched), --CO(CH.sub.2).sub.p CH.sub.3, or --COO(CH.sub.2).sub.p CH.sub.3, with p=0 or 1,R.sup.3 and R.sup.4 are hydrogen or alkyl with 1 to 3 carbon atoms (linear or branched),R.sup.5 is hydrogen or methyl,m is a whole number from 2 to 11, andn is a whole number from 1 to 3.Type: GrantFiled: June 19, 1996Date of Patent: July 7, 1998Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne, Eva Rissel
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Patent number: 5703186Abstract: Premixed polymers which can serve as base polymers for high-resolution resists are structured from 40 to 99 mole % of a tert. butyl ester of an unsaturated carboxylic acid and 1 to 60 mole % of an anhydride of an unsaturated carboxylic acid.Type: GrantFiled: September 23, 1996Date of Patent: December 30, 1997Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Horst Borndoerfer, Hellmut Ahne, Siegfried Birkle, Eberhard Kuehn, Rainer Leuschner, Eva Rissel, Michael Sebald
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Patent number: 5688631Abstract: Methods for producing solutions of polybenzoxazol precursors that are soluble in alkali and resist solutions based on such precursors. A dicarboxylic acid halogenide is reacted with a bis-(o-aminophenol) in an organic solvent and in the presence of a polymer with a tertiary N atom, which is insoluble in the solvent. Excess polymer and hydrohalogenide are separated from the reaction solution. The reaction solution is optionally mixed with a photoactive component.Type: GrantFiled: March 19, 1996Date of Patent: November 18, 1997Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne, Eva Rissel
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Patent number: 5616667Abstract: New mixed polymers which can serve as base polymers for high-resolution resists are structured from 40 to 99 mole % of a tert. butyl ester of an unsaturated carboxylic acid and 1 to 60 mole % of an anhydride of an unsaturated carboxylic acid.Type: GrantFiled: May 4, 1995Date of Patent: April 1, 1997Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Horst Borndoerfer, Hellmut Ahne, Siegfried Birkle, Eberhard Kuehn, Rainer Leuschner, Eva Rissel, Michael Sebald
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Patent number: 5262283Abstract: High resolution resist structures with steep edges are obtained using standard equipment, with high sensitivity, particularly in the deep UV range. A photoresist layer consisting of a polymer having anhydride groups and blocked imide- or phenolic hydroxyl groups and of a photoactive component which forms a strong acid during irradiation is first deposited on a substrate, followed by irradiation with a patterned image. The irradiated photoresist layer is then treated with a water-based or a water-alcohol-based solution of a polyfunctional amino- or hydroxy-siloxane, and is etched in an oxygen-containing plasma.Type: GrantFiled: April 26, 1991Date of Patent: November 16, 1993Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Horst Borndorfer, Eva Rissel, Rainer Leuschner, Michael Sebald, Hellmut Ahne, Siegfried Birkle
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Patent number: 5229258Abstract: High resolution resist structures with steep edges are obtained using standard equipment, even in cases involving critical contact-hole planes. First, a photoresist layer containing a polymer with chemically reactive groups and a photoactive component based on diazoketone or quinone diazide is deposited on a substrate. The photoresist layer is then irradiated with a patterned image and treated with a polyfunctional organic compound having functional groups that can chemically react with the reactive groups of the polymer. This step is followed by a maskless flood exposure. The photoresist layer irradiated in this manner is then treated with a metal-containing organic compound having at least one functional group capable of chemical reaction with the reactive groups of the polymer, followed by etching in an oxygen-containing plasma.Type: GrantFiled: April 8, 1991Date of Patent: July 20, 1993Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Horst Borndorfer, Eva Rissel, Rainer Leuschner, Michael Sebald, Hellmut Ahne, Siegfried Birkle
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Patent number: 5109089Abstract: The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi(meth)acrylate or pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an .alpha.,.omega. -diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol C.sub.1 to C.sub.10), a low-molecular bivalent alcohol (C.sub.2 to C.sub.4) or water, where the diepoxide is an aromatic diglycidylether and the .alpha.,.omega. -diol is an .alpha.,.omega.-hydroxy-terminated polyoxyalkylene, an .alpha.,.omega. -hydroxy-terminated polyester, an .alpha.,.omega. -hydroxy-terminated polybutadiene or an .alpha.,.omega. -hydroxy-terminated organo-functional polysiloxane.Type: GrantFiled: June 25, 1991Date of Patent: April 28, 1992Assignee: Siemens AktiengesellschaftInventors: Siegfried Birkle, Hans-Dieter Feucht, Rainer Kamps, Eva Rissel
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Patent number: 5057587Abstract: The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi (meth)acrylate or Pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an .alpha., .omega.-diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol (C.sub.1 to C.sub.10), a low-molecular bivalent alcohol (C.sub.2 to C.sub.4) or water, where the diepoxide is an aromatic diglycidylether and the .alpha.,.omega.-diol is an .alpha., .omega.-hydroxy-terminated polyoxyalkylene, an .alpha., .omega.-hydroxy-terminated polyester, an .alpha.,.omega.-hydroxy-terminated polybutadiene or an .alpha.,.omega.-hydroxy-terminated organo-functional polysiloxane.Type: GrantFiled: December 16, 1988Date of Patent: October 15, 1991Assignee: Siemens AktiengesellschaftInventors: Siegfried Birkle, Hans-Dieter Feucht, Rainer Kamps, Eva Rissel
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Patent number: 5015709Abstract: The invention provides a radiation-curable liquid resin for use as a secondary coating of lightwave guides which is a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a 1:2 addition compound of a diepoxide with a mean molecular weight.ltoreq.1000 and a short-chain .alpha.,.omega. -diol with a mean molecular weight.ltoreq.700 or with a 1:2 addition compound of a diepoxide with a mean molecular weight.ltoreq.400 and a monovalent aliphatic alcohol with a mean molecular weight.ltoreq.200, where the diepoxide is an aliphatic-aromatic or aromatic diglycidylether, an aliphatic or cycloaliphatic diepoxide or a silicon-organodiepoxide, and where the short-chain .alpha.,.omega. -diol is an .alpha..omega. -hydroxy-terminated polyoxyalkylene, an .alpha.,.omega. -hydroxy-terminated polyester, an .alpha.,.omega. -hydroxy-terminated polybutadiene, an .alpha.,.omega. -hydroxyterminated organo-functional polysiloxane or an .alpha.,.omega. -alkanediol with a mean molecular weight.Type: GrantFiled: December 19, 1988Date of Patent: May 14, 1991Assignee: Siemens AktiengesellschaftInventors: Siegfried Birkle, Hans-Dieter Feucht, Rainer Kamps, Eva Rissel
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Patent number: 4144360Abstract: The invention relates to a method for the currentless catalytic precipitation of aluminum. The surface of insulating and conductive materials (substrates) to be aluminized is (1) catalyzed, while a film-forming moisture-insensitive layer is developed, with a compound active at the boundary surfaces, by a brief immersion in a dilute solution of (a) a modified ester or acylate of titanium, zirconium or vanadium, substituted at the metal atom with short- and long-chain organic radicals or (b), a chloride of the transition metals of the IV and V secondary group of the periodic system of the elements and a water-containing metal soap of a polyvalent metal, preferably aluminum soaps; (2) is intensively rinsed with aprotic solvents, preferably having a boiling point of over 100.degree. C.; and (3) is immersed in a 1 to 4% solution of trialkylaminalanes in a solvent mixture of aromatic and highly viscous aliphatic compounds. A homogeneous and strongly adhering aluminum coating is thereby obtained.Type: GrantFiled: August 1, 1977Date of Patent: March 13, 1979Assignee: Siemens AktiengesellschaftInventors: Siegfried Birkle, Richard Dotzer, Eva Rissel