Patents by Inventor Kunio Shimizu

Kunio Shimizu 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: 10569408
    Abstract: A handle includes: a switch lever having an operational portion in an inverted U-shape, and configured to press an on/off switch when the operational portion is gripped and pressed; a handle body provided with the on/off switch mounted thereto and having an inner peripheral slit from which the operational portion of the switch lever housed in the handle body projects; a spring having a supported portion and a pair of arms extending from the supported portion, housed in the handle body, and biasing and pushing the switch lever back; and a plurality of limiters provided at locations in either the handle body or the switch lever at a distance from the spring, and configured to limit movement of the switch lever.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: February 25, 2020
    Assignee: YAMABIKO CORPORATION
    Inventor: Kunio Shimizu
  • Publication number: 20200045889
    Abstract: A hedge trimmer capable of effectively increasing the rigidity of a cutter assembly as well as reducing its weight, and easily adjusting the clearance for sliding of cutters, thereby improving the operability and addressing degradation of the cutting performance of the cutters is disclosed. In the cutter assembly, upper and lower cutter supports are provided with a plurality of clamping portions at predetermined intervals for increasing the rigidity, each clamping portion having a square tube-like spacer and a first bolt. In addition, at least one adjusting portion having a second bolt for adjusting the separation distance between the upper and lower cutter supports is provided between adjacent clamping portions.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 13, 2020
    Applicant: YAMABIKO CORPORATION
    Inventors: Kunio SHIMIZU, Hisao KODAMA
  • Publication number: 20170326721
    Abstract: A handle includes: a switch lever having an operational portion in an inverted U-shape, and configured to press an on/off switch when the operational portion is gripped and pressed; a handle body provided with the on/off switch mounted thereto and having an inner peripheral slit from which the operational portion of the switch lever housed in the handle body projects; a spring having a supported portion and a pair of arms extending from the supported portion, housed in the handle body, and biasing and pushing the switch lever back; and a plurality of limiters provided at locations in either the handle body or the switch lever at a distance from the spring, and configured to limit movement of the switch lever.
    Type: Application
    Filed: January 13, 2015
    Publication date: November 16, 2017
    Applicant: YAMABIKO CORPORATION
    Inventor: Kunio SHIMIZU
  • Publication number: 20160087814
    Abstract: A PLC network and a wireless network are asynchronous to each other, and data communication between the PLC network and the wireless network is performed via a gateway station. A wireless-communication quality-information processing device includes a reception unit, a wireless-communication quality-information generation unit, and a communication processing unit. The reception unit receives a wireless communication frame transmitted from a wireless slave station of the wireless network. The wireless-communication quality-information generation unit generates wireless-communication quality information indicating quality of wireless communication in the wireless network from characteristic information included in the received wireless communication frame. The communication processing unit determines whether to reflect data included in the wireless communication frame to the PLC network as new data by referring to the wireless-communication quality information.
    Type: Application
    Filed: March 27, 2014
    Publication date: March 24, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventor: Kunio SHIMIZU
  • Patent number: 9081133
    Abstract: A polarizing plate protective film forming a polarizing plate by sandwiching a polarizer with two of the polarizing plate protective films, wherein at least one of the two polarizing plate protective films exhibits Ro defined by Expression (I) of 0 to 10 mm and Rt defined by Expression (II) of ?20 to 20 mm, and also at least one of the polarizing plate protective films has a hard coat layer: Expression (I): Ro=(nx?ny)×d; Expression (II): Rt={(nx+ny)/2?nz}×d; wherein nx is a refractive index in a delayed phase axis direction in a plane of the polarizing plate protective film, ny is a refractive index in a direction at right angles to the delayed phase axis in the plane, nz is a refractive index in a film thickness direction, and d is a film thickness (nm).
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: July 14, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takashi Takebe, Kunio Shimizu, Shigeki Oka
  • Publication number: 20150015951
    Abstract: A polarizing plate protective film forming a polarizing plate by sandwiching a polarizer with two of the polarizing plate protective films, wherein at least one of the two polarizing plate protective films exhibits Ro defined by Expression (I) of 0 to 10 mm and Rt defined by Expression (II) of ?20 to 20 mm, and also at least one of the polarizing plate protective films has a hard coat layer: Expression (I): Ro=(nx?ny)×d; Expression (II): Rt={(nx+ny)/2?nz}×d; wherein nx is a refractive index in a delayed phase axis direction in a plane of the polarizing plate protective film, ny is a refractive index in a direction at right angles to the delayed phase axis in the plane, nz is a refractive index in a film thickness direction, and d is a film thickness (nm).
    Type: Application
    Filed: October 2, 2014
    Publication date: January 15, 2015
    Inventors: Takashi TAKEBE, Kunio SHIMIZU, Shigeki OKA
  • Patent number: 8900676
    Abstract: A polarizing plate protective film forming a polarizing plate by sandwiching a polarizer with two of the polarizing plate protective films, wherein at least one of the two polarizing plate protective films exhibits Ro defined by Expression (I) of 0 to 10 mm and Rt defined by Expression (II) of ?20 to 20 mm, and also at least one of the polarizing plate protective films has a hard coat layer: Expression (I): Ro=(nx?ny)×d; Expression (II): Rt={(nx+ny)/2?nz}×d; wherein nx is a refractive index in a delayed phase axis direction in a plane of the polarizing plate protective film, ny is a refractive index in a direction at right angles to the delayed phase axis in the plane, nz is a refractive index in a film thickness direction, and d is a film thickness (nm).
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: December 2, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Takashi Takebe, Kunio Shimizu, Shigeki Oka
  • Patent number: 8580358
    Abstract: A cellulose ester film containing a polyester represented by Formula (1) or (2), wherein an in-plane retardation value (Ro) is 0 to 5 nm and a retardation value in a thickness direction (Rt) is ?20 to 10 nm, Ro and Rt being measured at 23° C. and 55% RH: B1-(G-A-)mG-B1??Formula (1) wherein B1: monocarboxylic acid, G: dihydric alcohol, A: dibasic acid, B1, G and A contain no aromatic ring, m: repeat number, plural B1 may be the same or different, and plural G may be the same or different; and B2-(A-G-)nA-B2??Formula (2) wherein B2: monoalcohol, G: dihydric alcohol, A: dibasic acid, provided that none of B2, G and A contains an aromatic ring, n: repeat number, plural B2 may be the same or different, and plural G may be the same or different.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: November 12, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Takebe, Kunio Shimizu, Koji Tasaka, Shigeki Oka
  • Patent number: 8246880
    Abstract: Disclosed is a method for producing a cellulose ester film wherein a film-forming material containing the following components A-C is heated and melted, and a cellulose ester film is formed therefrom by melt-casting. A: a cellulose resin, B: an ester compound obtained by condensing an organic acid represented by Formula (1) and a polyalcohol, and C: an aliphatic polyester or an aliphatic-aromatic copolymer.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: August 21, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Satomi Kawabe, Kazuto Kiyohara, Kunio Shimizu, Isamu Michihata, Akihiko Takeda, Kazuaki Nakamura
  • Patent number: 7973883
    Abstract: Disclosed is a polarizing plate protective film having high dimensional stability against moisture. Also disclosed are a polarizing plate using such a polarizing plate protective film, and a liquid crystal display. Specifically disclosed is a polarizing plate protective film which is characterized by containing a cellulose ester and a polymer X which is obtained by copolymerizing at least a styrene derivative monomer Xa having no hydroxyl group and an ethylenically unsaturated monomer Xb having a hydroxyl group or a carboxyl group, and has a weight average molecular weight of 500-100,000.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: July 5, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shigeki Oka, Kunio Shimizu
  • Patent number: 7947342
    Abstract: A polarizer protective film comprising: a cellulose ester; a saccharide ester having an ester of compound (A), the compound (A) having one furanose structure or one pyranose structure in the molecule, wherein all or a part of OH groups in the compound (A) are esterified, or an ester of compound (B), the compound (B) having two to twelve of at least one of a furanose structure and a pyranose structure bonded in the molecule, wherein all or a part of OH groups in the compound (B) are esterified; and a compound represented by Formula (R) or (Ra):
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: May 24, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Murakami, Kunio Shimizu, Minori Tamagawa
  • Patent number: 7815823
    Abstract: An object is to provide an optical film in which retardation variation is less even after a long period of duration of use, to provide an optical compensating film in which transparency and flatness are not deteriorated in a stretching process by using the foregoing film as a support, and to provide a polarizing plate and a liquid crystal display exhibiting reduced visibility variation caused by heat generation of an optical LED backlight, and excellent color reproducibility. Disclosed is a manufacturing method of an optical film formed by melt-casting a composition containing a cellulose resin and a plasticizer, wherein the cellulose resin has a residual sulfuric acid content of 0.1-50 ppm, and the composition contains a polymer having a weight average molecular weight of 500-30000 prepared via polymerization of ethylenic unsaturated monomers, or an acrylic polymer having a weight average molecular weight of 500-30000.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: October 19, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Murakami, Kunio Shimizu
  • Patent number: 7790249
    Abstract: A stretched cellulose ester film produced by stretching after film forming employing a cellulose ester including a polyester polyol obtained from (a) a glycol having an average carbon atom number of 2 to 3.5 and (b) a dibasic or an anhydrous dibasic acid having an average carbon number of 4 to 5.5, wherein the stretched cellulose ester film exhibits retardation value Ro in the range of 30 to 200 nm, and a retardation value Rt in the range of 70 to 400 nm, Ro and Rt are each defined by specific Formulas (1) and (2).
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: September 7, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Isamu Michihata, Kunio Shimizu
  • Patent number: 7749578
    Abstract: An object of the present invention is to provide a polarizing plate protective film exhibiting a reduced variation value retardation, which is highly stable against polarizing plate degradation, polarizing plate dimension, and polarizing plate curl. Disclosed is a cellulose ester film possessing cellulose ester, polymer X having a weight average molecular weight of 2000-30000 prepared by copolymerizing ethylenic unsaturated monomer Xa containing no aromatic ring and hydrophilic group within a molecule and ethylenic unsaturated monomer Xb containing no aromatic ring but a hydrophilic group within a molecule, and polymer Y having a weight average molecular weight of 500-3000 prepared by polymerizing ethylenic unsaturated monomer Ya containing no aromatic ring.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 6, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shigeki Oka, Kunio Shimizu, Takashi Takebe
  • Publication number: 20100157206
    Abstract: Disclosed is a polarizing plate protective film having high dimensional stability against moisture. Also disclosed are a polarizing plate using such a polarizing plate protective film, and a liquid crystal display. Specifically disclosed is a polarizing plate protective film which is characterized by containing a cellulose ester and a polymer X which is obtained by copolymerizing at least a styrene derivative monomer Xa having no hydroxyl group and an ethylenically unsaturated monomer Xb having a hydroxyl group or a carboxyl group, and has a weight average molecular weight of 500-100,000.
    Type: Application
    Filed: April 2, 2007
    Publication date: June 24, 2010
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Shigeki Oka, Kunio Shimizu
  • Publication number: 20100151156
    Abstract: Disclosed is a method for producing a cellulose ester film wherein a film-forming material containing the following components A-C is heated and melted, and a cellulose ester film is formed therefrom by melt-casting. A: a cellulose resin, B: an ester compound obtained by condensing an organic acid represented by Formula (1) and a polyalcohol, and C: an aliphatic polyester or an aliphatic-aromatic copolymer.
    Type: Application
    Filed: September 29, 2006
    Publication date: June 17, 2010
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventors: Satomi Kawabe, Kazuto Kiyohara, Kunio Shimizu, Isamu Michihata, Akihiko Takeda, Kazuaki Nakamura
  • Patent number: 7704570
    Abstract: A polarizing plate includes two transparent supports A and B; and a polarizer sandwiched between the two transparent supports A and B; wherein (i) the transparent support A is a stretched cellulose ester film (a) which contains a non-phosphoric acid ester plasticizer and substantially does not contain a phosphoric acid ester plasticizer, and wherein (ii) the transparent support B is a stretched cellulose ester film (b) which has a retardation value R0 of from 0 nm to 10 nm and a retardation value Rt of from ?30 nm to 20 nm, and the retardation value R0 and the retardation value Rt are defined by the following formulas (I) and (II): Ro=(nx?ny)×d??Formula (I): Rt={(nx+ny)/2?nz}×d.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: April 27, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Takebe, Kunio Shimizu, Shigeki Oka
  • Publication number: 20090207491
    Abstract: A polarizing plate protective film forming a polarizing plate by sandwiching a polarizer with two of the polarizing plate protective films, wherein at least one of the two polarizing plate protective films exhibits Ro defined by Expression (I) of 0 to 10 mm and Rt defined by Expression (II) of ?20 to 20 mm, and also at least one of the polarizing plate protective films has a hard coat layer: Expression (I): Ro=(nx?ny)×d; Expression (II): Rt={(nx+ny)/2?nz}×d; wherein nx is a refractive index in a delayed phase axis direction in a plane of the polarizing plate protective film, ny is a refractive index in a direction at right angles to the delayed phase axis in the plane, nz is a refractive index in a film thickness direction, and d is a film thickness (nm).
    Type: Application
    Filed: June 11, 2007
    Publication date: August 20, 2009
    Applicant: Konica Minolta Opto, Inc.
    Inventors: Takashi Takebe, Kunio Shimizu, Shigeki Oka
  • Patent number: 7494611
    Abstract: Disclosed is a cellulose ester film comprising a polymer prepared by polymerizing at least one ethylenically unsaturated monomer selected from vinyl esters, vinyl esters having a functional group, acrylic esters, and acrylic esters having a functional group, wherein the polymer has a weight average molecular weight of not more than 5,000.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: February 24, 2009
    Assignee: Konica Corporation
    Inventors: Kunio Shimizu, Toru Kobayashi
  • Patent number: 7354633
    Abstract: A retardation film containing a polyalcohol ester, a polycarboxylic acid ester, and a cellulose ester, wherein a total acylation degree of the cellulose ester is in the range of 2.4-2.8; and a Mw/Mn value of the cellulose ester is in the range of 1.4-3.0, provided that Mw represents a weight average molecular weight and Mn represent a number average molecular weight of the cellulose ester.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 8, 2008
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Koichi Saito, Kunio Shimizu, Isamu Michihata