Kempf; James J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kempf; James J..The latest application filed is for "shooting bow".
Company Profile
18.91.12
- Kempf; James J. - Coralville IA
- Kempf; James J. - Canton MI
- Kempf; James J. - Iowa City IA
Patent Activity
| Patent | Date |
|---|---|
| Projectile launching device with self-timing and without cam lean Grant 11,378,350 - Kempf , et al. July 5, 2 | 2022-07-05 |
| Projectile launching device with self-timing and without cam lean Grant 11,371,795 - Kempf , et al. June 28, 2 | 2022-06-28 |
| Spring loaded accessory mount and means Grant 11,365,950 - Kempf , et al. June 21, 2 | 2022-06-21 |
| Cranking mechanism Grant 11,346,632 - Kempf , et al. May 31, 2 | 2022-05-31 |
| Crossbow with integral cocking worm gear driven spool Grant 11,268,781 - Kempf , et al. March 8, 2 | 2022-03-08 |
| Crossbow with integral cocking worm gear driven spool Grant 11,156,429 - Kempf , et al. October 26, 2 | 2021-10-26 |
| Crossbow with integral cocking and a moving latch Grant 11,131,524 - Kempf , et al. September 28, 2 | 2021-09-28 |
| Projectile launching device with self-timing and without cam lean Grant 11,112,205 - Kempf , et al. September 7, 2 | 2021-09-07 |
| Projectile launching device with self-timing and without cam lean Grant 11,022,398 - Kempf , et al. June 1, 2 | 2021-06-01 |
| Cocking sled for a crossbow Grant 10,996,018 - Kempf , et al. May 4, 2 | 2021-05-04 |
| Archery cam shaft with integrated cable track Grant 10,989,492 - Kempf , et al. April 27, 2 | 2021-04-27 |
| Crossbow with built in cranking mechanism Grant 10,948,257 - Huang , et al. March 16, 2 | 2021-03-16 |
| Crossbow with integral cocking and a moving latch assembly Grant 10,690,436 - Kempf , et al. | 2020-06-23 |
| Multi-draw weight archery bow with cable timing Grant 10,514,227 - Kempf , et al. Dec | 2019-12-24 |
| Projectile launching device with self-timing and without cam lean Grant 10,458,742 - Kempf , et al. Oc | 2019-10-29 |
| Crossbow with built in cocking device Grant 10,458,743 - Kempf , et al. Oc | 2019-10-29 |
| Shooting bow with reduced limb travel Grant 10,408,560 - Kempf , et al. Sept | 2019-09-10 |
| Crossbow with built in electric cocking Grant 10,359,254 - Kempf , et al. | 2019-07-23 |
| Adjustable trigger pull for a crossbow Grant 10,215,522 - Kempf , et al. Feb | 2019-02-26 |
| Multi-draw weight archery bow with cable timing Grant 10,139,189 - Isenhower , et al. Nov | 2018-11-27 |
| Shooting bow with reduced limb travel Grant 10,139,191 - Kempf , et al. Nov | 2018-11-27 |
| Shooting bow with reduced limb travel Grant 10,126,089 - Kempf , et al. November 13, 2 | 2018-11-13 |
| Silent safety for a crossbow Grant 10,066,894 - Kempf , et al. September 4, 2 | 2018-09-04 |
| Projectile launching device with self-timing and without cam lean Grant 10,048,036 - Kempf , et al. August 14, 2 | 2018-08-14 |
| Shooting bow with reduced limb travel Grant 10,018,442 - Kempf , et al. July 10, 2 | 2018-07-10 |
| Self-centering anti-dry fire device for a crossbow Grant 10,012,468 - Kempf , et al. July 3, 2 | 2018-07-03 |
| Multi-draw weight archery bow with cable timing Grant 9,945,634 - Isenhower , et al. April 17, 2 | 2018-04-17 |
| Reverse style crossbow having four cable pulleys Grant 9,879,938 - Isenhower , et al. January 30, 2 | 2018-01-30 |
| Projectile launching device with self-timing and without cam lean Grant 9,829,268 - Kempf , et al. November 28, 2 | 2017-11-28 |
| Projectile launching device with self-timing and without cam lean Grant 9,759,509 - Kempf , et al. September 12, 2 | 2017-09-12 |
| Vibration dampening limb bolt Grant 9,759,510 - Kempf , et al. September 12, 2 | 2017-09-12 |
| Multi-element one piece crossbow frame Grant 9,696,107 - Kempf , et al. July 4, 2 | 2017-07-04 |
| Crossbow lock mechanism Grant 9,551,544 - Kempf January 24, 2 | 2017-01-24 |
| Reverse style crossbow Grant 9,513,080 - Kempf , et al. December 6, 2 | 2016-12-06 |
| Shooting bow with transitional modules Grant 9,377,267 - Kempf June 28, 2 | 2016-06-28 |
| Adjustable multi-level archery quiver Grant 9,372,045 - Kempf June 21, 2 | 2016-06-21 |
| Assault rifle style mainframe barrel for a crossbow Grant 9,291,421 - Kempf March 22, 2 | 2016-03-22 |
| Crossbow lock mechanism Grant 9,255,754 - Kempf February 9, 2 | 2016-02-09 |
| Shooting bow with pulleys Grant 9,243,861 - Kempf , et al. January 26, 2 | 2016-01-26 |
| Shooting bow with pulleys Grant 9,234,719 - Kempf January 12, 2 | 2016-01-12 |
| Vibration dampened barrel for a crossbow Grant 9,038,619 - Kempf May 26, 2 | 2015-05-26 |
| Archery quiver attachment Grant RE45,330 - Kempf January 13, 2 | 2015-01-13 |
| Shooting bow Grant 8,899,218 - Kempf December 2, 2 | 2014-12-02 |
| Tangent point arrow rest Grant 8,875,687 - Huang , et al. November 4, 2 | 2014-11-04 |
| Shooting bow Grant 8,770,178 - Kempf July 8, 2 | 2014-07-08 |
| Shooting Bow App 20140076296 - KEMPF; JAMES J. | 2014-03-20 |
| Archery quiver attachment Grant 8,505,527 - Kempf August 13, 2 | 2013-08-13 |
| Intake manifold having intake ports with consolidated shape Grant D665,821 - Capko , et al. August 21, 2 | 2012-08-21 |
| Crossbow cocking assembly Grant 8,104,461 - Kempf January 31, 2 | 2012-01-31 |
| Shooting bow App 20110253118 - Kempf; James J. | 2011-10-20 |
| Powerstroke crossbow Grant 7,836,871 - Kempf November 23, 2 | 2010-11-23 |
| Crossbow cocking assembly App 20100269807 - Kempf; James J. | 2010-10-28 |
| Bow Grant 7,708,001 - Kempf May 4, 2 | 2010-05-04 |
| Shooting bow App 20090194086 - Kempf; James J. | 2009-08-06 |
| Tuning slide valve for intake manifold Grant 7,500,493 - Vorenkamp , et al. March 10, 2 | 2009-03-10 |
| Powerstroke Crossbow App 20080168969 - Kempf; James J. | 2008-07-17 |
| Tuning slide valve for intake manifold App 20080121296 - Vorenkamp; Erich J. ; et al. | 2008-05-29 |
| Crossbow Grant 7,363,921 - Kempf April 29, 2 | 2008-04-29 |
| Reverse draw technology archery Grant 7,328,693 - Kempf February 12, 2 | 2008-02-12 |
| Bow App 20070221184 - Kempf; James J. | 2007-09-27 |
| Trigger assembly Grant 7,174,884 - Kempf , et al. February 13, 2 | 2007-02-13 |
| Trigger assembly App 20060144381 - Kempf; James J. ; et al. | 2006-07-06 |
| Crossbow App 20060144380 - Kempf; James J. | 2006-07-06 |
| Dust pre-separator for an automobile engine Grant 6,921,424 - Bugli , et al. July 26, 2 | 2005-07-26 |
| Method of measuring surfactant penetration in an air filter assembly App 20050063868 - Grimes, Ryan E. ; et al. | 2005-03-24 |
| Dust pre-separator for an automobile engine App 20040025481 - Bugli, Neville J. ; et al. | 2004-02-12 |
| Adjustable, portable combination tree stand Grant 5,538,101 - Kempf July 23, 1 | 1996-07-23 |
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