Patents by Inventor Hajime Kambara

Hajime Kambara 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: 9581922
    Abstract: Disclosed herein are treated fumed silica particles comprising a modified polydialkylsiloxane on the surface thereof, a method for preparing treated fumed silica particles, and a rheological system comprising a polar liquid and treated fumed silica particles. Also disclosed are toner compositions comprising toner particles and treated fumed silica particles comprising a modified polydialkylsiloxane.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 28, 2017
    Assignee: Cabot Corporation
    Inventors: Angelica Maria Sanchez Garcia, Elizabeth Sims, Sean Sullivan, Geary Graham, Hajime Kambara
  • Publication number: 20150079512
    Abstract: Disclosed herein are treated fumed silica particles comprising a modified polydialkylsiloxane on the surface thereof, a method for preparing treated fumed silica particles, and a rheological system comprising a polar liquid and treated fumed silica particles. Also disclosed are toner compositions comprising toner particles and treated fumed silica particles comprising a modified polydialkylsiloxane.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 19, 2015
    Inventors: Angelica Maria Sanchez Garcia, Elizabeth Sims, Sean Sullivan, Geary Graham, Hajime Kambara
  • Patent number: 7052630
    Abstract: In this application is disclosed a resin additive composition which can by produced by precipitating a calix(n+m+l)arene represented by the following general formula (2) and in a dissolved state together with or at the same time at least one functional ingredient selected from the group consisting of various water-soluble or hydrophilic resin flam-retardants, resin thermal stabilizers and resin curing agents, and in a dissolved or suspended state. This resin additive composition has a good affinity for organic polymers such as polyolefin and the like, which allows the functional ingredient(s) to be dispersed homogeneously in the resin. Therefore are provided high-performance resin compositions comprising various functional ingredient(s).
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: May 30, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Wu Yang, Hajime Kambara, Mika Osawa, Yoko Ueno, Masayuki Okoshi
  • Publication number: 20030057406
    Abstract: In this application is disclosed a resin additive composition which can by produced by precipitating a calix(n+m+l)arene represented by the following general formula (2) and in a dissolved state together with or at the same time at least one functional ingredient selected from the group consisting of various water-soluble or hydrophilic resin flam-retardants, resin thermal stabilizers and resin curing agents, and in a dissolved or suspended state.
    Type: Application
    Filed: October 15, 2002
    Publication date: March 27, 2003
    Inventors: Wu Yang, Hajime Kambara, Mika Osawa, Yoko Ueno, Masayuki Okoshi
  • Patent number: 6117543
    Abstract: A carrier particle (A) is previously treated with a compound (B) such as a silane coupling agent, if necessary. To the carrier particle, a free functional group is introduced by allowing a reactive group of the carrier particle (A) to react with a compound (C) such as a bisoxazoline compound. As a result, a reactive particle represented by the following formula (I):[C--(B1).sub.m ].sub.n --A--[(B2).sub.p --D].sub.q (I)wherein A is a carrier particle, C is an organic group having at least one free functional group, D is a hydrophilic or hydrophobic group, B1 is an organic group connecting the carrier particle A to the organic group C and B2 is an organic group connecting the carrier particle A to the hydrophilic or hydrophobic group; n is an integer of not less than 1, m and p are 0 or 1, q is 0 or an integer of not less than 1, m and p may be different according to n and q; and having a number of active sites can be obtained. A hydrophilic or hydrophobic group may be introduced to the carrier (A).
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: September 12, 2000
    Assignee: KRI International, Inc.
    Inventors: Hiroaki Zaima, Hajime Kambara, Tak Yuen Chow, Kazuyuki Sato
  • Patent number: 5998575
    Abstract: A polymer alloy is obtained by adding a hydrophobic compound (1) having a hydrophobic main chain and a functional group containing an active hydrogen atom and a bisoxazoline compound (2) shown by the following formula to a composition containing plural polymers incompatible with each other: ##STR1## wherein D represents an optionally substituted alkylene group, cycloalkylene group or arylene group, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 respectively represent a hydrogen atom or an optionally substituted alkyl group or aryl group. The compound (1) includes a compound having an aliphatic hydrocarbon group as a main chain, containing a carboxyl group and having a molecular weight of 10,000 or less (e.g. higher fatty acids). A compatibilizing agent as produced by reacting the compound (1) and an excess amount of the compound (2) can also be used.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: December 7, 1999
    Assignee: KRI International, Inc.
    Inventors: Hajime Kambara, Tak Yuen Chow
  • Patent number: 5064631
    Abstract: A mixture comprising (i) an oxide, hydroxide or oxyhydroxide of aluminum, (ii) an aluminum-containing sulfate, (iii) an oxide or oxyacid of boron or an alkali metal salt thereof and (iv) an alkali metal sulfate is heated at a temperature of 900 to 1200.degree. C. to grow an aluminum borate whisker. In this process, the reaction is advanced apparently in the solid phase, and this process is advantageous over the conventional processes in that the yield is high and the isolation and purification of the reaction product is facilitated.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: November 12, 1991
    Assignee: Shikoku Chemicals Corporation
    Inventors: Hajime Hata, Hajime Kambara, Seiji Sogabe, Keizo Oka