Patents by Inventor Eri HIRAHARA

Eri HIRAHARA 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).

  • Patent number: 10259907
    Abstract: The present invention relates to a novel block copolymer of structure 1, wherein, A- is a block polymer chain, B is a block polymer chain, wherein, A- and B- are chemically different, covalently connected polymer chains, which are phase separable and the moiety X(Y(Z)b)a is a junction group, which comprises a surface active pendant moiety Y(Z)b wherein: a is an integer from 1 to 4 denoting the number of surface active pendant moieties Y(Z)b on X, b is an integer from 1 to 5 denoting the number of Z moieties on the linking moiety Y, X is a linking group between the A polymer block, the B polymer block and the moiety Y, Y is a linking group or a direct valence bond between X and Z; and Z is a moiety independently selected from, a fluorine containing moiety, a Si1-Si8 siloxane containing moiety or a hydrocarbon moiety with at least 18 carbons, and further wherein the junction group X(Y(Z)b)a has a surface energy less than that that of the block A and less than that of the block B.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: April 16, 2019
    Assignees: AZ Electronic Materials (Luxembourg) S.à r.l., IBM Corporation
    Inventors: Ankit Vora, Eri Hirahara, Joy Cheng, Durairaj Baskaran, Orest Polishchuk, Melia Tjio, Margareta Paunescu, Daniel Sanders, Guanyang Lin
  • Patent number: 9505721
    Abstract: [Problem] to provide an aromatic imide compound wherein the sensitivity for visible light such as g-line, h-line etc. is increased and solubility is also improved. [Means for solving problem] The aromatic imide compound of the invention is a compound represented by the formula (1) below (in the formula, R1 represents a haloalkyl group having 1 to 7 carbon atoms or a haloaryl group, R2 represents a group containing a substituted or unsubstituted, aliphatic or aromatic group which may have a heteroatom, and adjacent R2s may form an imido group by connecting each other, R3 represent a halogen atom or a hydrocarbon group, m is zero or an integer of 1 or more, n is zero or an integer of 1 or more, and a sum of n and m is 1 to 6). These compounds are obtained by following processes. A halogenated naphtharic anhydride is reacted with an aromatic group-containing hydrocarbon such as ethynylbenzene to prepare a naphthalic anhydride substituted by an aromatic group-containing group.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: November 29, 2016
    Assignee: AZ ELECRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Eri Hirahara, Ralph Dammel, Georg Pawlowski
  • Publication number: 20160244557
    Abstract: The present invention relates to a novel block copolymer of structure 1, wherein, A- is a block polymer chain, B is a block polymer chain, wherein, A- and B- are chemically different, covalently connected polymer chains, which are phase separable and the moiety X(Y(Z)b)a is a junction group, which comprises a surface active pendant moiety Y(Z)b wherein: a is an integer from 1 to 4 denoting the number of surface active pendant moieties Y(Z)b on X, b is an integer from 1 to 5 denoting the number of Z moieties on the linking moiety Y, X is a linking group between the A polymer block, the B polymer block and the moiety Y, Y is a linking group or a direct valence bond between X and Z; and Z is a moiety independently selected from, a fluorine containing moiety, a Si1-Si8 siloxane containing moiety or a hydrocarbon moiety with at least 18 carbons, and further wherein the junction group X(Y(Z)b)a has a surface energy less than that that of the block A and less than that of the block B.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 25, 2016
    Applicants: International Business Machines Corporation
    Inventors: Ankit VORA, Eri HIRAHARA, Joy CHENG, Durairaj BASKARAN, Orest POLISHCHUK, Melia TJIO, Margareta PAUNESCU, Daniel SANDERS, Guanyang LIN
  • Publication number: 20150299132
    Abstract: [Problem] to provide an aromatic imide compound wherein the sensitivity for visible light such as g-line, h-line etc. is increased and solubility is also improved. [Means for solving problem] The aromatic imide compound of the invention is a compound represented by the formula (1) below (in the formula, R1 represents a haloalkyl group having 1 to 7 carbon atoms or a haloaryl group, R2 represents a group containing a substituted or unsubstituted, aliphatic or aromatic group which may have a heteroatom, and adjacent R2s may form an imido group by connecting each other, R3 represent a halogen atom or a hydrocarbon group, m is zero or an integer of 1 or more, n is zero or an integer of 1 or more, and a sum of n and m is 1 to 6). These compounds are obtained by following processes. A halogenated naphtharic anhydride is reacted with an aromatic group-containing hydrocarbon such as ethynylbenzene to prepare a naphthalic anhydride substituted by an aromatic group-containing group.
    Type: Application
    Filed: October 28, 2013
    Publication date: October 22, 2015
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Eri HIRAHARA, Ralph DAMMEL, Georg PAWLOWSKI