Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6688486 | Easy open end and can for powders | Ralph Helmrich | 2004-02-10 |
| 6623268 | Butane cooking gas container | Ralph Helmrich, Kihong Kim, Chung Han KIM | 2003-09-23 |
| 6325254 | Fluorine surface treating of a barrier piston | — | 2001-12-04 |
| 6193094 | Resealable easy open closure and can | Ralph Helmrich | 2001-02-27 |
| 6123977 | Food spray containing grape seed oil | — | 2000-09-26 |
| 6068005 | Can washing system | Ralph Helmrich | 2000-05-30 |
| 5997935 | Crisp fried in grapeseed oil | — | 1999-12-07 |
| 5938067 | Deformation resistant aerosol container cover | Ralph Helmrich | 1999-08-17 |
| 5865337 | Thin walled cover for aerosol container and method of making same | Ralph Helmrich, Gerlad P. Hawkins | 1999-02-02 |
| 5804237 | Method of and package for sterilized edible material | Ray Slocum | 1998-09-08 |
| RE35843 | Low pressure non-barrier type, valved dispensing can | Ralph Helmrich | 1998-07-14 |
| 5738253 | Pressurizing thin walled barrier can with mixed propellants | — | 1998-04-14 |
| 5704513 | Thin walled cover for aerosol container and method of making same | Ralph Helmrich, Gerlad P. Hawkins | 1998-01-06 |
| 5676512 | Thin walled cover for aerosol container and method of making same | Ralph Helmrich, Gerald P. Hawkins | 1997-10-14 |
| 5636761 | Deformation resistant aerosol container cover | Ralph Helmrich | 1997-06-10 |
| 5211317 | Low pressure non-barrier type, valved dispensing can | Ralph Helmrich | 1993-05-18 |
| 4735349 | Irritant aerosol spray | Ralph Helmrich | 1988-04-05 |
| 4667601 | Launchable aerosol grenade | Ralph Helmrich | 1987-05-26 |
| 4641765 | Expandable pressurized barrier container | — | 1987-02-10 |
| 4627354 | Launchable aerosol grenade | Ralph Helmrich | 1986-12-09 |
| 4582228 | Irritant aerosol spray | Ralph Helmrich | 1986-04-15 |
| 4562942 | Rolling diaphragm barrier for pressurized container | — | 1986-01-07 |
| 4465740 | Decorative medallion and method and machine for manufacture | Ralph Helmrich | 1984-08-14 |
| 4271991 | Low pressure dispensing | — | 1981-06-09 |
| 4257560 | Plural spray pattern aerosol spray head | — | 1981-03-24 |