Patents by Inventor Minoru Iwasaki

Minoru Iwasaki 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: 11686046
    Abstract: Provided is a moisturized tissue excellent in strength and snot wiping property. In the moisturized tissue paper, a paper thickness is 220 to 330 ?m, a basis weight is 15 to 18 g/m2 per ply, a proportion of NBKP in the pulp combination is more than 70 mass %, a chemical solution content is 26 to 32 mass %, an arithmetic mean curvature at a peak point of an outer surface in an unpressurized state (Spc (1)) is 4.0 to 4.8 (1/mm), and a developed area ratio at an interface on the outer surface (Sdr) is 0.020 to 0.030 (?).
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: June 27, 2023
    Assignee: Daio Paper Corporation
    Inventors: Shuta Yasui, Minoru Iwasaki
  • Publication number: 20220372710
    Abstract: Provided is 3-ply tissue paper suitable for performing “tissue off” and excellent in softness and smoothness. In the 3-ply tissue paper containing an aqueous moisturizer, a paper thickness for three plies is 176 to 230 ?m, an arithmetic mean roughness Sa is 0.007 to 0.020 mm, and a compression work is 1.70 to 2.40 gf·cm/cm2 and a compression recovery rate is 46.0 to 54.5% for four sets of three plies, twelve plies in total.
    Type: Application
    Filed: September 29, 2020
    Publication date: November 24, 2022
    Applicant: Daio Paper Corporation
    Inventors: Shuta YASUI, Minoru IWASAKI
  • Publication number: 20220127790
    Abstract: To provide a toilet paper that provides an excellent thick feeling, has excellent water-disintegrability, has sufficient softness, provides a security feeling to a human body during use, and is environmentally friendly. The problem is solved by a 3-ply or 4-ply toilet paper, each ply having a basis weight of 10.5 to 12.5 g/m2, containing oxygen-pulped and non-chlorine-bleached softwood kraft pulp in an amount of 50 to 100% by mass of fibers, containing a cationic fatty acid amide-based softener, each ply having a paper thickness of 80 to 100 ?m, having a paper thickness of 320 to 400 ?m as the entire toilet paper, and having water-disintegrability of 10 seconds or less.
    Type: Application
    Filed: February 12, 2020
    Publication date: April 28, 2022
    Applicant: Daio Paper Corporation
    Inventors: Shuta YASUI, Minoru IWASAKI
  • Publication number: 20220106740
    Abstract: To provide a non-moisturizing high-grade type tissue paper having excellent softness. The problem is solved by a 3-ply tissue paper having a basis weight of 12.0 g/m2 or more per ply, having a paper thickness of 200 to 265 ?m for three plies, having a water content of 4.0 to 9.0% by mass, containing 0.15 to 0.45% by mass of an oily component to be extracted with diethyl ether, and having a bending rigidity of less than 0.006 gf·cm/cm in CD (Cross Direction) and a bending recovery force of less than 0.005 gf·cm/cm in CD.
    Type: Application
    Filed: January 30, 2020
    Publication date: April 7, 2022
    Inventors: Noritada TOMIOKA, Minoru IWASAKI, Shuta YASUI, Sachiko TAKAHASHI, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
  • Publication number: 20220049426
    Abstract: Provided is a moisturized tissue excellent in strength and snot wiping property. In the moisturized tissue paper, a paper thickness is 220 to 330 ?m, a basis weight is 15 to 18 g/m2 per ply, a proportion of NBKP in the pulp combination is more than 70 mass %, a chemical solution content is 26 to 32 mass %, an arithmetic mean curvature at a peak point of an outer surface in an unpressurized state (Spc (1)) is 4.0 to 4.8 (1/mm), and a developed area ratio at an interface on the outer surface (Sdr) is 0.020 to 0.030 (?).
    Type: Application
    Filed: November 22, 2019
    Publication date: February 17, 2022
    Applicant: Daio Paper Corporation
    Inventors: Shuta YASUI, Minoru IWASAKI
  • Publication number: 20210401242
    Abstract: Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly. Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g/m2 per ply. 80 to 100 mass % of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 ?m per ply, a paper thickness of 400 to 600 ?m as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.
    Type: Application
    Filed: November 22, 2019
    Publication date: December 30, 2021
    Applicant: Daio Paper Corporation
    Inventors: Shuta YASUI, Minoru IWASAKI
  • Patent number: 9956750
    Abstract: Provided is tissue paper which has softness, smoothness, and moistness either equaling or surpassing those of the existing moisturizing tissue paper and which is also less sticky and is not easily torn in use. The two-ply chemicals applied tissue paper has a configuration in which the amount of the chemicals applied on both side surfaces is 2.0 to 5.5 g/m2, the basis weight per each layer of sheets constituting the two-ply chemicals applied tissue paper is 10 to 25 mg/m2, and the thickness of the two-ply chemicals applied tissue paper is 100 to 140 ?m.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: May 1, 2018
    Assignee: DAIO PAPER CORPORATION
    Inventor: Minoru Iwasaki
  • Publication number: 20130101817
    Abstract: Provided is tissue paper which has softness, smoothness, and moistness either equaling or surpassing those of the existing moisturizing tissue paper and which is also less sticky and is not easily torn in use. The two-ply chemicals applied tissue paper has a configuration in which the amount of the chemicals applied on both side surfaces is 2.0 to 5.5 g/m2, the basis weight per each layer of sheets constituting the two-ply chemicals applied tissue paper is 10 to 25 mg/m2, and the thickness of the two-ply chemicals applied tissue paper is 100 to 140 ?m.
    Type: Application
    Filed: August 2, 2010
    Publication date: April 25, 2013
    Applicant: DAIO PAPER CORPORATION
    Inventor: Minoru Iwasaki
  • Patent number: 7578903
    Abstract: The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(?L2+?a2+?b2)1/2.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: August 25, 2009
    Assignee: Daio Paper Corporation
    Inventors: Tetsuya Uehara, Minoru Iwasaki
  • Publication number: 20070110963
    Abstract: The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(?L2+?a2+?b2)1/2.
    Type: Application
    Filed: December 2, 2004
    Publication date: May 17, 2007
    Inventors: Tetsuya Uehara, Minoru Iwasaki
  • Patent number: 7204561
    Abstract: A is attached to a hollow portion in a wheel, an inner peripheral groove is provided on an inner peripheral surface of the hollow portion and an outer peripheral groove is provided on the outer peripheral surface of the cap, forming a single annular space. Into the annular space a C-spring or an O-ring is inserted, thereby attaching the cap to the wheel. Further, the O-ring is sandwiched between the annular surface of the wheel and the inner surface of the cap, or magnets are sandwiched therebetween, for eliminating rattling.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: April 17, 2007
    Assignee: Japan Active Co., Ltd.
    Inventor: Minoru Iwasaki
  • Patent number: 7128523
    Abstract: A drainage pump has a pump part in which blades mounted on a rotary shaft are arranged in a pump casing and an underwater bearing unit which uses pumped water mixed with hard particles as a lubricant and has a sliding bearing for journaling the rotary shaft. A portion of the rotary shaft journaled by the sliding bearing is formed of a cemented carbide material and a shaft journaling surface of the sliding bearing is formed of a thermoplastic resin material to be embedded with hard particles.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: October 31, 2006
    Assignee: Hitachi Industries Co., Ltd.
    Inventors: Kouji Aizawa, Shigeru Kishimoto, Kaname Takagi, Minoru Iwasaki, Tomohiko Tagawa
  • Publication number: 20050089434
    Abstract: A drainage pump has a pump part in which blades mounted on a rotary shaft are arranged in a pump casing and an underwater bearing unit which uses pumped water mixed with hard particles as a lubricant and has a sliding bearing for journaling the rotary shaft. A portion of the rotary shaft journaled by the sliding bearing is formed of a cemented carbide material and a shaft journaling surface of the sliding bearing is formed of a thermoplastic resin material to be embedded with hard particles.
    Type: Application
    Filed: June 29, 2004
    Publication date: April 28, 2005
    Inventors: Kouji Aizawa, Shigeru Kishimoto, Kaname Takagi, Minoru Iwasaki, Tomohiko Tagawa
  • Publication number: 20050046268
    Abstract: A cap 2 or 4 that can be easily attached to and removed from a wheel has no weak parts susceptible to breakage. The cap 2 or 4 is attached to a hollow portion 1f in the wheel 1, an inner peripheral groove 1e being provided on an inner peripheral surface 1c of the hollow portion 1f and an outer peripheral groove 2e being provided on the outer peripheral surface 2c of the cap, thus forming a single annular space. Into such annular space a C-spring 3 or an O-ring 5 is inserted, thereby attaching the cap 2 or 4 to the wheel 1. Further, an O-ring 5 may be sandwiched between the annular surface 1d of the wheel 1 and the inner surface 2d of the cap 2, or magnets 6a and 6b may be sandwiched therebetween, and rattling is eliminated.
    Type: Application
    Filed: August 30, 2004
    Publication date: March 3, 2005
    Applicant: Japan Active Co., Ltd.
    Inventor: Minoru Iwasaki
  • Patent number: 6158228
    Abstract: A method for manufacturing single crystal ice by creating a temperature environment in which a top section of the refrigerating temperature distribution of a hermetically sealed refrigerating space is held to high temperature and a bottom section to low temperature, guiding water to the high-temperature section, and dripping droplets of the water to the low-temperature section.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: December 12, 2000
    Assignees: The Kanden Kogyo, Inc., The Kansai Electric Power Co., Inc., Katsutoshi Tsushima
    Inventors: Ikuo Nakamura, Hiroshi Morimoto, Tetsuya Kokubo, Minoru Iwasaki, Toshihiro Kiuchi, Zenji Imamura, Syoji Okamoto, Katsutoshi Tsushima
  • Patent number: 4073008
    Abstract: The amplitude value of a sinusoidal wave is calculated by operating means which processes absolute values of two data samples which are sampled from the sinusoidal wave at two points spaced 90.degree. electrical degrees apart thereby producing an electrical signal proportional to the amplitude value. The operation means comprises a comparator, a combination of an adder and a subtractor, or a combination of a comparator and an adder. The output of the comparator or the combination is multiplied with a predetermined coefficient and then added together to produce said signal.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: February 7, 1978
    Assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Tokyo Denryoku Kabushiki Kaisha
    Inventors: Fumio Andow, Tetsuo Matsushima, Minoru Iwasaki
  • Patent number: D568185
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 6, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masashi Sakai, Minoru Iwasaki
  • Patent number: D846016
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: April 16, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Minoru Iwasaki, Atsushi Noda
  • Patent number: D863393
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: October 15, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Minoru Iwasaki, Atsushi Noda
  • Patent number: D926852
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: August 3, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Minoru Iwasaki