Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DS

Daniel D. Friel, Sr.

EDEdgecraft: 65 patents #1 of 34Top 3%
DUDuracell: 6 patents #18 of 239Top 8%
MIMicrochip Technology Incorporated: 2 patents #307 of 958Top 35%
EKEd. Wusthof Dreizackwerk Kg: 1 patents #4 of 9Top 45%
Wilmington, DE: #11 of 3,182 inventorsTop 1%
Delaware: #22 of 7,163 inventorsTop 1%
Overall (All Time): #20,710 of 4,157,543Top 1%
84 Patents All Time

Issued Patents All Time

Showing 26–50 of 84 patents

Patent #TitleCo-InventorsDate
7517275 Apparatus for precision steeling/conditioning of knife edges Robert P. Bigliano 2009-04-14
D587551 Manual sharpener Abraham Leibson, Daniel D. Friel, Jr., Bela Elek 2009-03-03
7494403 Knife sharpener with improved knife guides 2009-02-24
7488241 Precision control of sharpening angles Bela Elek 2009-02-10
7472644 High speed baking in novel toasting apparatus 2009-01-06
7452262 Knife sharpeners with improved knife guides 2008-11-18
7390243 Sharpener for blades of food slicers Jeremy J. Lacombe 2008-06-24
7354612 High speed baking in novel toasting apparatus 2008-04-08
7290704 Method and system relating to a multi-lateral trade engine for payment transactions Robert Ball, Jeffrey R. Sechrest 2007-11-06
7287445 Apparatus for precision steeling/conditioning of knife edges Daniel D. Friel, Jr., Robert P. Bigliano, Abraham Leibson 2007-10-30
7279660 Apparatus for brewing beverages Tom Long, Daniel D. Friel, Jr., James Fitzgerald, H. William Busch, Jr. 2007-10-09
7235004 Precision means for sharpening and creation of microblades along cutting edges Robert P. Bigliano 2007-06-26
D542616 Electric knife sharpener Bela Elek, Robert P. Bigliano 2007-05-15
7174822 Efficient food slicer 2007-02-13
D530143 Waffle maker Abraham Leibson, Terry Hall, Daniel D. Friel, Jr. 2006-10-17
7036424 High speed baking in novel toasting apparatus 2006-05-02
D519815 Manual sharpener Abraham Leibson 2006-05-02
6997795 Versatile manual scissor sharpener 2006-02-14
D513955 Manual knife sharpener 2006-01-31
D513682 Food slicer Daniel D. Friel, Jr. 2006-01-24
6881137 Manual knife sharpener with angle control 2005-04-19
6875093 Sharpening device Daniel D. Friel, Jr., Terry Hall 2005-04-05
6863600 Apparatus for precision edge refinement of metallic cutting blades 2005-03-08
6726551 Manual knife sharpener with angle control 2004-04-27
D488953 Food slicer 2004-04-27