Device and method for solving circles

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6702582
SERIAL NO

10290228

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A combination of devices that demonstrate visually and on an intuitive level mathematical principles relating to the circle including the number .pi., the relationship between circumference, diameter, radius and .pi., and the relationship between the area of a circle formed of circle sectors and an approximate parallelogram obtained by rearranging the circle sectors.

First Claim

See full text

Other Claims data not available

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MATHTREE INC1801 SHERIDAN COURT MCLEAN VA 22101

International Classification(s)

loading....
  • 2002 Application Filing Year
  • G09B Class
  • 391 Applications Filed
  • 150 Patents Issued To-Date
  • 38.37 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20022003200420052006200720082009201020112012201320142015201620170255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Salvo, Lynnea C 1801 Sheridan Ct., McLean, VA 22101 2 11

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • 1 Citation Count
  • G09B Class
  • 5.11 % this patent is cited more than
  • 21 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges9764622336211701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 90100 +05101520253035404550556065707580

Forward Cite Landscape

Load Citation