Wittmann; Otto
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wittmann; Otto.The latest application filed is for "process for bonding lignocellulose-containing raw materials with a prepolymer based on a urethane-modified diphenylmethane diisocyanate mixture".
- Wittmann; Otto - Frankenthal DE
| Patent | Date |
|---|---|
| Process for bonding lignocellulose-containing raw materials with a prepolymer based on a urethane-modified diphenylmethane diisocyanate mixture Grant 4,546,039 - Horacek , et al. October 8, 1 | 1985-10-08 |
| Preparation of cocondensates which produce weather-resistant bonding Grant 4,458,049 - Diem , et al. July 3, 1 | 1984-07-03 |
| Production of wood glue Grant 4,021,413 - Eisele , et al. May 3, 1 | 1977-05-03 |
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