Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › World Kitchen › Charles E. Buchanan
CB

Charles E. Buchanan — 4 Patents

WKWorld Kitchen: 2 patents #22 of 32Top 70%
PIProgressive International: 1 patents #38 of 49Top 80%
RIRo-An Industries: 1 patents #3 of 5Top 60%
Nazareth, PA: #82 of 277 inventorsTop 30%
Pennsylvania: #19,360 of 74,527 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Charles E. Buchanan has been granted 4 US patents while listed as an inventor at World Kitchen. The first was granted in 1986 and the most recent in May 2012. Charles E. Buchanan ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Charles E. Buchanan in Nazareth, PA, US.

Patents per Year

Patents granted per year, 1986 to 2012Bar chart with a peak of 1 patents in 1986.peak 11986: 1 patents19862001: 1 patents20012002: 1 patents20022012: 1 patents2012

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D659467 Kitchen tool handle — 2012-05-15
D457780 Handle for cheese grater Pamela S. Hannum, John Szeto, William J. Calderwood 2002-05-28
D450543 Napkin holder Pamela S. Hannum, John Szeto, William J. Calderwood 2001-11-20
4571175 Process for a disposal of waste solutions Hugh A. Bogle 1986-02-18

Frequent Collaborators

Pamela S. Hannum2 shared
John Szeto2 shared
William J. Calderwood2 shared
Hugh A. Bogle1 shared

Nearby-Ranked Inventors

Jagadeesh Kandasamy4
Ross CABOT4
George Ueda4
Franz A. Gruswitz4
Tommy Glimberg4
Vinayakaraddy Gulabal4
Sandra Bittorf4
Aviel FOGEL4
Eric Matthew Walton4