Ludwig; Charles H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ludwig; Charles H..The latest application filed is for "cohesive fibrous mat for in-transit particulate control".
- Ludwig; Charles H. - Waldron Island WA
- Ludwig; Charles H. - Bellingham WA
| Patent | Date |
|---|---|
| Cohesive fibrous mat for in-transit particulate control Grant 4,492,729 - Bannerman , et al. January 8, 1 | 1985-01-08 |
| Lignin composition and a process for its preparation Grant 4,017,475 - Ludwig April 12, 1 | 1977-04-12 |
| Plywood adhesive and use thereof Grant 3,957,703 - Ludwig , et al. May 18, 1 | 1976-05-18 |
| Lignin composition and process for its preparation Grant 3,912,706 - Rachor , et al. October 14, 1 | 1975-10-14 |
| Plywood Process And Product Wherein The Adhesive Comprises A Lignosulfonate-phenol-formaldehyde Reaction Product Grant 3,658,638 - Ludwig , et al. April 25, 1 | 1972-04-25 |
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