Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
EH

Eric Holroyd — 18 Patents

ALApsley Metals Limited: 9 patents #1 of 12Top 9%
BFBridgestone Firestone: 5 patents #30 of 276Top 15%
WLW & A Bates Limited: 3 patents #3 of 9Top 35%
Nappan, GB: #1 of 23 inventorsTop 5%
Overall (All Time): #245,716 of 4,157,543Top 6%
18 Patents All Time
Eric Holroyd has been granted 18 US patents while listed as an inventor at Apsley Metals Limited. The first was granted in 1983 and the most recent in May 1997. Eric Holroyd ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Eric Holroyd in Nappan, GB.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
5626806 Carbon black incorporation in polymeric material Colin Holroyd 1997-05-06
5190605 Apparatus and method for manufacturing two pneumatic tires Anthony R. Wright 1993-03-02
5127978 Tire building form having coaxial discs Anthony R. Wright 1992-07-07
5114512 Bead filler construction Anthony R. Wright 1992-05-19
5100490 Method for constructing a bead reinforcement with alternate windings of polymeric material and axially spaced apart windings of a wire Anthony R. Wright 1992-03-31
5098768 Flexible reinforced polymeric material and a method of forming such a material David J. B. Perkins 1992-03-24
5045376 Reinforced polymeric article David J. B. Perkins 1991-09-03
4992035 Vehicle tire mold Colin Holroyd 1991-02-12
4983239 Method of manufacture of tire using an annular mold to form a multi-component subassembly Colin Holroyd, Anthony Sumner, Anthony R. Wright 1991-01-08
4967821 Pneumatic tire having carcass ply end portions anchored in each bead bundle Anthony R. Wright 1990-11-06
4929292 Method for the manufacture of a pneumatic tire Anthony R. Wright 1990-05-29
4921673 Method of manufacture of tires and apparatus therefore Colin Holroyd 1990-05-01
4743322 Molding of elastomeric material components James N. McGlashen, Ronald H. Pointon 1988-05-10
4738738 Manufacture of vehicle tires James N. McGlashen 1988-04-19
4602973 Manufacture of non-woven fabric Henry A. Gardner, Ronald Jones 1986-07-29
4409059 Reinforced structures David J. B. Perkins 1983-10-11
4401493 Reinforced structures George K. Bailey, Anthony R. Wright, David J. B. Perkins 1983-08-30
4399187 Reinforced articles David J. B. Perkins 1983-08-16