Hellmuth; Walter W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hellmuth; Walter W..The latest application filed is for "lubricating oil composition".
- Hellmuth; Walter W. - Hopewell Junction NY
- Hellmuth; Walter W. - Beacon NY
| Patent | Date |
|---|---|
| Lubricating oil composition Grant 4,104,182 - Chou , et al. August 1, 1 | 1978-08-01 |
| Boron amide lubricating oil additive Grant 4,025,445 - Hellmuth , et al. May 24, 1 | 1977-05-24 |
| Ashless Lubricating Oil Dispersant Grant 3,869,514 - Miller , et al. March 4, 1 | 1975-03-04 |
| Overbased Calcium Salts Of Alkenylsuccinimide Grant 3,764,536 - Hellmuth , et al. October 9, 1 | 1973-10-09 |
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