KER-TRAIN HOLDINGS LTD.
Patent Applications and Registrations
Patent applications and USPTO patent grants for KER-TRAIN HOLDINGS LTD..The latest application filed is for "one-to-one torque coupling".
- KER-TRAIN HOLDINGS LTD. - Kingston CA
- Ker-Train Holdings Ltd - Kingston CA
- Ker-Train Holdings Ltd. - Kinston CA
- Ker-Train Holdings Ltd. - CA CA
- Ker-Train Holdings Ltd. - N/A
| Patent | Date |
|---|---|
| One-to-one Torque Coupling App 20210025457 - Kerr; John Hugh | 2021-01-28 |
| Tracked-vehicle regenerative steering differential Grant 10,730,552 - Kerr | 2020-08-04 |
| One-to-one torque coupling Grant 10,704,604 - Kerr | 2020-07-07 |
| Tracked-vehicle Regenerative Steering Differential App 20180327027 - KERR; JOHN HUGH | 2018-11-15 |
| Concentric V-groove coupling Grant 10,113,595 - Kerr October 30, 2 | 2018-10-30 |
| Concentric V-Groove Coupling App 20170343053 - Kerr; John Hugh | 2017-11-30 |
| One-to-one Torque Coupling App 20170276180 - Kerr; John Hugh | 2017-09-28 |
| Concentric V-groove coupling Grant 9,732,803 - Kerr August 15, 2 | 2017-08-15 |
| Concentric V-groove Coupling App 20150053525 - Kerr; John Hugh | 2015-02-26 |
| Concentric V-groove coupling Grant 8,764,597 - Kerr July 1, 2 | 2014-07-01 |
| All gear infinitely variable transmission Grant 7,188,719 - Kerr March 13, 2 | 2007-03-13 |
| All gear infinitely variable transmission Grant 6,849,023 - Kerr February 1, 2 | 2005-02-01 |
| Power transfer device Grant 6,766,891 - Kerr July 27, 2 | 2004-07-27 |
| Power transfer device Grant 6,691,847 - Kerr February 17, 2 | 2004-02-17 |
| Coplanar reverted gear train loop Grant 6,669,594 - Kerr December 30, 2 | 2003-12-30 |
| Rotary pump Grant 6,637,313 - Kerr October 28, 2 | 2003-10-28 |
| Spiral-type coupling Grant 6,446,776 - Kerr September 10, 2 | 2002-09-10 |
| Coplanar reverted gear train loop Grant 6,418,810 - Kerr July 16, 2 | 2002-07-16 |
| Full-complement multi-directional coupling Grant 6,409,001 - Kerr June 25, 2 | 2002-06-25 |
| Power transfer device Grant 6,367,604 - Kerr April 9, 2 | 2002-04-09 |
| Spiral type one-way clutch Grant 6,129,189 - Kerr October 10, 2 | 2000-10-10 |
| Automotive accessory drive pulleys incorporating spiral type one-way clutch Grant 5,638,931 - Kerr June 17, 1 | 1997-06-17 |
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