Immersion Type (e.g., Aquarium Filter, Etc.) Patents (Class D23/210)
  • Undergravel fishtank filter
    Patent number: D293706
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: January 12, 1988
    Assignee: Veny Plastic Company, Limited
    Inventor: Ying Y. Ng
  • Aquarium power filter
    Patent number: D294172
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: February 9, 1988
    Assignee: Willinger Bros. Inc.
    Inventor: Allan H. Willinger
  • Filter for a household aquarium
    Patent number: D295440
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: April 26, 1988
    Assignee: Kabushiki Kaisha Tominago Jyushi Kogyosho
    Inventor: Kazutoshi Tominaga
  • Filter for household aquarium
    Patent number: D295441
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: April 26, 1988
    Assignee: Kabushiki Kaisha Tominago Jyushi Kogyosho
    Inventor: Kazutoshi Tominaga
  • Aquarium filter
    Patent number: D296001
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: May 31, 1988
    Assignee: Veny Plastic Company Limited
    Inventor: Ying Y. Ng
  • Oil separation plate support frame for water treatment tanks
    Patent number: D298646
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: November 22, 1988
    Assignee: Sepa Waste Water Treatment Pty. Ltd.
    Inventor: John L. Meyers
  • Aquarium cleaner
    Patent number: D304506
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: November 7, 1989
    Assignee: Kabushiki Kaisha Tominaga Jyushi Kogyosho
    Inventor: Kazutoshi Tominaga
  • Aquarium filter cartridge
    Patent number: D307626
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: May 1, 1990
    Assignee: Willinger Brothers, Inc.
    Inventor: Allan Willinger
  • Aquarium filter
    Patent number: D317966
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: July 2, 1991
    Assignee: Willinger Bros., Inc.
    Inventor: Allan H. Willinger
  • Housing for an aquarium filtration system
    Patent number: D321552
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: November 12, 1991
    Inventor: Luis Del Rosario
  • Pool cleaner leaf trap
    Patent number: D328778
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: August 18, 1992
    Assignee: Arneson Products, Inc.
    Inventors: Alexander A. Gefter, Kenneth N. Marshall
  • Pool cleaner leaf trap
    Patent number: D330582
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: October 27, 1992
    Assignee: Arneson Products, Inc.
    Inventors: Alexander A. Gefter, Kenneth N. Marshall
  • Aquarium filter cartridge
    Patent number: D331448
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: December 1, 1992
    Assignee: Lewis H. Jaslow
    Inventor: Lewis H. Jaslow
  • Nitrogen-removing aquarium filter
    Patent number: D342306
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: December 14, 1993
    Inventor: Forrest A. Young
  • Aquatic tank filter having a container and filtering element
    Patent number: D365382
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: December 19, 1995
    Inventors: Daryl Dockery, Denzel Dockery
  • Combined aquarium filter and aerator
    Patent number: D368297
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: March 26, 1996
    Inventor: Eugene W. Dunlap
  • Bug catcher to be use on the side of a pool
    Patent number: D369449
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: April 30, 1996
    Inventors: Jerry R. Stiefel, Sharon D. Stiefel
  • Disc diffuser
    Patent number: D371187
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: June 25, 1996
    Assignee: Nopon Oy
    Inventor: Hannu Ryynanen
  • Aquarium air pump
    Patent number: D371424
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: July 2, 1996
    Assignee: Aquatank, Inc.
    Inventors: Donald J. Tigert, Donald F. Bryant
  • Pond filter
    Patent number: D371425
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 2, 1996
    Inventor: James L. Anderson
  • Pigmented cover and lid for swimming pool equipment
    Patent number: D372296
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: July 30, 1996
    Inventor: David M. Canther
  • Pond filter
    Patent number: D375138
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: October 29, 1996
    Inventor: James L. Anderson
  • Swimming pool skimmer basket
    Patent number: D377249
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: January 7, 1997
    Inventor: Ken Granshaw
  • Swimming pool backwashing device
    Patent number: D380807
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: July 8, 1997
    Inventor: Mitchel Dorset-Turner
  • Filter for an aquarium
    Patent number: D383829
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: September 16, 1997
    Inventor: Shoei Her Guo
  • Diffuser for water aeration
    Patent number: D386243
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: November 11, 1997
    Assignee: Nopon Oy
    Inventors: Magnus Hasto, Hannu Kahonen, Hannu Ryynanen
  • Aquarium filter
    Patent number: D392717
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: March 24, 1998
    Assignee: Kencar, Inc.
    Inventor: Bill W. Conger, IV
  • Body for swimming pool filters
    Patent number: D396264
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: July 21, 1998
    Assignee: Aplister, S.A.
    Inventor: Robert Garrigos Ruiz
  • Base for an aquarium filter
    Patent number: D405501
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: February 9, 1999
    Assignee: Kencar, Inc.
    Inventor: Bill W. Conger, IV
  • Syphon wand kit for use with aquariums and tanks
    Patent number: D409716
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: May 11, 1999
    Inventor: James F. Bakke
  • Split flow diffuser for an aquarium
    Patent number: D410992
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 15, 1999
    Assignee: Aquaria, Inc.
    Inventor: Shawn A. Cross
  • Dispenser for swimming pool chemicals
    Patent number: D412198
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: July 20, 1999
    Inventor: Jonathan J. Bonelli
  • Pool cleaner
    Patent number: D413649
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: September 7, 1999
    Inventor: Joseph A. King
  • Aquarium filter
    Patent number: D414242
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: September 21, 1999
    Inventor: Mace J Carter
  • Aquarium filter
    Patent number: D428109
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: July 11, 2000
    Assignee: Eheim GmbH & Co. KG
    Inventor: Ferdinand Mayer