Interfitting Elements (e.g., Take Apart And Put Together) Patents (Class D21/479)
Planar (e.g., jigsaw type) (Class D21/480)
  • Device for early teaching of mathematics
    Patent number: 9454916
    Abstract: A device for visual and tactile learning in mathematics. A set is comprised of twenty-two individual clear, square counters; eleven male (11) and eleven female (12), each set numbered respectively zero through ten. Raised numbers, and dots provide a learning platform for number recognition and counting. Raised addition and equals symbols provide a platform for learning addition and subtraction. Addition can be achieved by drawing the two counters together in a locking process. Subtraction can be achieved by stacking and locking the female counter (12) over the male counter (11).
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 27, 2016
    Inventor: Andrew David Kelly
  • Shaped trilobal particles
    Patent number: 7198845
    Abstract: An elongate, shaped particle having three protrusions each extending from and attached to a central position aligned along the central longitudinal axis of the particle, the cross-section of the particle occupying the area encompassed by the outer edges of six outer circles around a central circle minus the area occupied by three alternating outer circles, wherein each of the six outer circles is touching two neighbouring outer circles and wherein three alternating outer circles are equidistant to the central circle, have the same diameter, and may be attached to the central circle.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: April 3, 2007
    Assignee: Shell Oil Company
    Inventors: Bastiaan Willem Van Hasselt, Carolus Matthias Anna Maria Mesters
  • Structural alignment puzzle
    Patent number: D501895
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: February 15, 2005
    Inventors: Matthew F. Lennon, Patricia A. Lennon
  • Puzzle
    Patent number: D506790
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: June 28, 2005
    Inventor: Steven William Gee
  • Three-dimensional puzzle
    Patent number: D509263
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: September 6, 2005
    Assignee: Oliblock
    Inventor: Daniel R. Oakley
  • Spherical jigsaw puzzle
    Patent number: D511798
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: November 22, 2005
    Inventor: Shih-Hung Chuang
  • Play cube
    Patent number: D517126
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: March 14, 2006
    Inventor: Chung Hing Choi
  • Play cube
    Patent number: D517127
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: March 14, 2006
    Inventor: Chung Hing Choi
  • Spherical jigsaw puzzle
    Patent number: D518114
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: March 28, 2006
    Inventor: Shih-Hung Chuang
  • Cylindrical jigsaw puzzle
    Patent number: D519166
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: April 18, 2006
    Inventor: Shih-Hung Chuang
  • Desk top toy
    Patent number: D457923
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: May 28, 2002
    Assignee: Teleknowledge Group LTD
    Inventor: Lysander LeCoultre
  • Structural alignment puzzle
    Patent number: D464681
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: October 22, 2002
    Inventors: Matthew F. Lennon, Patricia A. Lennon
  • Paradoxical structural puzzle
    Patent number: D465534
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: November 12, 2002
    Inventors: Matthew F. Lennon, Patricia A. Lennon
  • Dissected toriod/mobius puzzle
    Patent number: D545916
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: July 3, 2007
    Inventor: Raymond Charles Fischer
  • Puzzle
    Patent number: D475094
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: May 27, 2003
    Assignee: Phoenix Industries
    Inventor: Chui Ying Ivy Ko
  • Three-dimensional puzzle
    Patent number: D480116
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 30, 2003
    Inventor: John Collins
  • Spherical jigsaw puzzle
    Patent number: D490482
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: May 25, 2004
    Inventor: Shih-Hung Chuang
  • Cubic puzzle
    Patent number: D491235
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: June 8, 2004
    Inventor: Chih Chung Fang
  • Spherical jigsaw puzzle
    Patent number: D497398
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: October 19, 2004
    Inventor: Shih-Hung Chuang
  • Three-dimensional animal puzzle
    Patent number: D589095
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: March 24, 2009
    Inventor: Bruce Wayne Ellis
  • Puzzle
    Patent number: D499151
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: November 30, 2004
    Assignee: Foamway.com
    Inventor: Ara Sarkis Arabian
  • Model of nested geometric forms
    Patent number: D590452
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: April 14, 2009
    Inventor: Norman Franklin Lloyd
  • Reciprocally linked nesting structure
    Patent number: D590742
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: April 21, 2009
    Inventor: Nils Folke Anderson
  • Three-dimensional jigsaw puzzle
    Patent number: D500347
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: December 28, 2004
    Assignee: Oliblock
    Inventor: Daniel R. Oakley
  • Block puzzle
    Patent number: D596242
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: July 14, 2009
    Inventors: Wayne Arthur Schwisow, Dawne Lyons
  • Puzzle stacker toy
    Patent number: D599416
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: September 1, 2009
    Inventor: Antonio Turco-Rivas
  • Puzzle coffee mug
    Patent number: D606809
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: December 29, 2009
    Inventor: Stuart D. Fletcher
  • Logic puzzle
    Patent number: D617850
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: June 15, 2010
    Assignee: Dodek Puzzle, LLC
    Inventor: Jerry Joe Langin-Hooper
  • Three-dimensional puzzle
    Patent number: D645911
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: September 27, 2011
    Assignee: Getinge Infection Control Aktiebolag
    Inventors: Peter Oliver Kock, Ylva Viktonia Nestmark
  • MatrixStar puzzle
    Patent number: D405481
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: February 9, 1999
    Assignee: David C. Sholin
    Inventor: David Craig Sholin
  • Jigsaw puzzle
    Patent number: D406620
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: March 9, 1999
    Assignee: 3 D'Art
    Inventor: Mark Charles Everdell
  • Puzzle
    Patent number: D660378
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: May 22, 2012
    Assignee: Smart, Naamloze Vennootschap
    Inventor: Raf Peeters
  • Puzzle cube
    Patent number: D412541
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: August 3, 1999
    Assignee: Samson Innovation Corporation Ltd.
    Inventor: Sai Ying Tam
  • Modular, reconfigurable educational sculpture
    Patent number: D425138
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: May 16, 2000
    Inventor: Haitham N. Haddad
  • Three-dimensional puzzle
    Patent number: D427248
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: June 27, 2000
    Inventor: Mikhail Volovnikov
  • Sectional display cube for photos
    Patent number: D431373
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: October 3, 2000
    Inventor: Anthony Joseph Zappitelli
  • Geometric modelling element
    Patent number: D721142
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: January 13, 2015
    Assignee: Novation Design Inc.
    Inventor: James T. Ziegler
  • Interlocking puzzle tank
    Patent number: D721859
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: January 27, 2015
    Assignee: Central Garden & Pet Company
    Inventor: Brad L. Mihlbauer
  • Puzzle
    Patent number: D739476
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: September 22, 2015
    Inventor: William Linden
  • Assemble game
    Patent number: D739896
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 29, 2015
    Inventor: Ehud Peker