Specific Gravity (8) Patents (Class D10/84)
  • Peak strength tester
    Patent number: D442504
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: May 22, 2001
    Inventor: James Stevens
  • Hand dynamometer
    Patent number: D517436
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: March 21, 2006
    Assignee: BTE Technologies, Inc.
    Inventors: Mark Dakos, Joseph Francis Perret, Jr.
  • Hydrometer
    Patent number: D266315
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: September 28, 1982
    Inventor: Ulf S. Tamm
  • Vibrating viscometer probe
    Patent number: D270818
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: October 4, 1983
    Inventor: Sanford L. Simons
  • Sample holder for a vibrating viscometer
    Patent number: D270819
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: October 4, 1983
    Inventor: Sanford L. Simons
  • Pycnometer
    Patent number: D476247
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: June 24, 2003
    Assignee: Tannas Company
    Inventor: Theodore W. Selby
  • Differential pressure indicator
    Patent number: D330865
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: November 10, 1992
    Assignee: Wilkerson Corporation
    Inventors: George N. Peletis, Robert B. Tosi, Ronald E. MacPherson
  • Breast compliance measuring device
    Patent number: D346124
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: April 19, 1994
    Assignee: N.K. Biotechnical Engineering Company
    Inventor: Nebojsa Kovacevic
  • Combined clock, card holder, pen holder and paperweight
    Patent number: D368036
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: March 19, 1996
    Inventor: Daniel G. Tronolone, Jr.
  • Remote station unit for geophysical data acquisition and processing system
    Patent number: D371515
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: July 9, 1996
    Assignee: Japex Geoscience Institute, Inc.
    Inventors: Yumio Iwaki, Yoshihiro Sekino, Yoshitaka Watanabe
  • Hydrometer
    Patent number: D384299
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: September 30, 1997
    Assignee: Aquarium Systems, Inc.
    Inventors: Edmund J. Mowka, Jr., Thomas A. Frakes
  • Photo detector
    Patent number: D683634
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: June 4, 2013
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yasuo Hayakawa, Satoshi Waga, Hideki Kamimura, Masaya Yamatani, Motoki Hirayama
  • Wireless torque transducer
    Patent number: D887881
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: June 23, 2020
    Assignee: CHINA PNEUMATIC CORPORATION
    Inventor: Hsiu-Feng Chu
  • Testing instrument
    Patent number: D894766
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: September 1, 2020
    Assignee: KOKUSAI KEISOKUKI KABUSHIKI KAISHA
    Inventors: Sigeru Matsumoto, Hiroshi Miyashita, Kazuhiro Murauchi, Shuichi Tokita
  • Air conditioning refrigerant charging device with digital gauge
    Patent number: D924707
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: July 13, 2021
    Assignee: Energizer Auto, Inc.
    Inventors: Michael K. Sherman, Kenneth A. Pfierman, Tushar Kulkarni, Jacob Fahsbender
  • Air conditioning refrigerant charging device with digital gauge
    Patent number: D924708
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: July 13, 2021
    Assignee: Energizer Auto, Inc.
    Inventors: Michael K. Sherman, Kenneth A. Pfierman, Tushar Kulkarni, Jacob Fahsbender
  • Testing instrument
    Patent number: D953179
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: May 31, 2022
    Assignee: KOKUSAI KEISOKUKI KABUSHIKI KAISHA
    Inventors: Sigeru Matsumoto, Hiroshi Miyashita, Kazuhiro Murauchi, Shuichi Tokita
  • Water quality detector
    Patent number: D962804
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: September 6, 2022
    Assignee: SHENZHEN YIMU TECHNOLOGY CO., LTD.
    Inventors: Zhiqiang Li, Hao Zhong
  • Air conditioning refrigerant charging device with digital gauge
    Patent number: D976728
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: January 31, 2023
    Assignee: Energizer Auto, Inc.
    Inventors: Michael K. Sherman, Kenneth A. Pfierman, Tushar Kulkarni, Jacob Fahsbender
  • Air conditioning refrigerant charging device with digital gauge
    Patent number: D991815
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: July 11, 2023
    Assignee: Energizer Auto, Inc.
    Inventors: Michael K. Sherman, Kenneth A. Pfierman, Tushar Kulkarni, Jacob Fahsbender