JK

James J. Kempf

AI Archery Innovators: 29 patents #1 of 4Top 25%
BL Barnett Outdoors, Llc.: 2 patents #4 of 12Top 35%
📍 Coralville, IA: #2 of 181 inventorsTop 2%
🗺 Iowa: #70 of 15,303 inventorsTop 1%
Overall (All Time): #37,332 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 1–25 of 61 patents

Patent #TitleCo-InventorsDate
12379180 Crossbow with de-cocking crank mechanism having sprockets David A. Barnett 2025-08-05
12247803 Crossbow with inertia brake cocking device 2025-03-11
12215954 Cranking mechanism 2025-02-04
12025402 Bowstring carrier traverse David A. Barnett 2024-07-02
11629928 Cranking mechanism Rex E. Isenhower 2023-04-18
11499792 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2022-11-15
11378350 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2022-07-05
11371795 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2022-06-28
11365950 Spring loaded accessory mount and means Rex E. Isenhower, Randy Kitts 2022-06-21
11346632 Cranking mechanism Rex E. Isenhower 2022-05-31
11268781 Crossbow with integral cocking worm gear driven spool Rex E. Isenhower 2022-03-08
11156429 Crossbow with integral cocking worm gear driven spool Rex E. Isenhower 2021-10-26
11131524 Crossbow with integral cocking and a moving latch Rex E. Isenhower 2021-09-28
11112205 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2021-09-07
11022398 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2021-06-01
10996018 Cocking sled for a crossbow Rex E. Isenhower 2021-05-04
10989492 Archery cam shaft with integrated cable track Rex E. Isenhower 2021-04-27
10948257 Crossbow with built in cranking mechanism Dorge O. Huang, Rex E. Isenhower 2021-03-16
10690436 Crossbow with integral cocking and a moving latch assembly Rex E. Isenhower 2020-06-23
10514227 Multi-draw weight archery bow with cable timing Rex E. Isenhower 2019-12-24
10458742 Projectile launching device with self-timing and without cam lean Rex E. Isenhower 2019-10-29
10458743 Crossbow with built in cocking device Rex E. Isenhower, Dorge O. Huang 2019-10-29
10408560 Shooting bow with reduced limb travel Rex E. Isenhower 2019-09-10
10359254 Crossbow with built in electric cocking Rex E. Isenhower, Dorge O. Huang 2019-07-23
10215522 Adjustable trigger pull for a crossbow Rex E. Isenhower 2019-02-26