Han; Joseph U.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Han; Joseph U..The latest application filed is for "nozzle device for spraying defined areas".
- Han; Joseph U. - Rancho Cucamonga CA
- Han, Joseph U. - Irvine CA
- Han; Joseph U. - Glendora CA
| Patent | Date |
|---|---|
| Nozzle device for spraying defined areas Grant 6,837,448 - Han , et al. January 4, 2 | 2005-01-04 |
| Nozzle device for spraying defined areas App 20020053609 - Han, Joseph U. ; et al. | 2002-05-09 |
| Enclosed pop-up sprinklers with shielded impact arms App 20010028004 - Kearby, Don Michael ; et al. | 2001-10-11 |
| Closed-case impact sprinklers with fitted fluid seal assemblies Grant 6,209,801 - Kearby , et al. April 3, 2 | 2001-04-03 |
| Closed-case impact sprinklers Grant 6,155,493 - Kearby , et al. December 5, 2 | 2000-12-05 |
| Impact sprinkler unit Grant 5,992,760 - Kearby , et al. November 30, 1 | 1999-11-30 |
| Irrigation sprinkler nozzle Grant 5,299,742 - Han April 5, 1 | 1994-04-05 |
| Over-center biasing spring for part circle gear driven rotary irrigation sprinklers Grant 5,288,023 - Han , et al. February 22, 1 | 1994-02-22 |
| Vandal resistant locking device for pop-up sprinkler nozzle housings Grant 5,141,157 - Han , et al. August 25, 1 | 1992-08-25 |
| Protective cap for pop-up lawn sprinklers Grant D319,489 - Han , et al. August 27, 1 | 1991-08-27 |
| Rotary drive sprinkler Grant 4,681,259 - Troup, deceased , et al. July 21, 1 | 1987-07-21 |
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