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

John C. Layer

SUSundstrand: 5 patents #99 of 697Top 15%
MOMoog: 2 patents #70 of 297Top 25%
Caledonia, IL: #11 of 34 inventorsTop 35%
Illinois: #13,022 of 84,256 inventorsTop 20%
Overall (All Time): #709,175 of 4,157,543Top 20%
7 Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
11274533 Linear motor for pumping Gregory M. Harnsberger, Carl Deirmengian, Brian Joseph Williams, David P. Cardamone 2022-03-15
5931739 Fail-safe ride simulator Gregory Joseph Guzewich, Larry D. Hall 1999-08-03
4986734 Overspeed protection system for aircraft fan engine Jeffrey D. Metcalf 1991-01-22
4869106 Governor checkout apparatus and method Jeffrey D. Metcalf 1989-09-26
4838403 Overtravel stop activated control valve 1989-06-13
4721196 Overtravel stop Jeffrey D. Metcalf 1988-01-26
4693352 Clutch mechanism David J. Lang, William G. Durtschi 1987-09-15