Zeigler; Douglas D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zeigler; Douglas D..The latest application filed is for "method of forming, inserting and permanently bonding ribs in boiler tubes".
- Zeigler; Douglas D. - Atwater OH
- Zeigler; Douglas D. - Marlboro Township Stark County
| Patent | Date |
|---|---|
| Method of forming, inserting and permanently bonding ribs in boiler tubes Grant 8,350,176 - Mohn , et al. January 8, 2 | 2013-01-08 |
| Method Of Forming, Inserting And Permanently Bonding Ribs In Boiler Tubes App 20090301159 - Mohn; Walter R. ; et al. | 2009-12-10 |
| Method for producing chromium carbide coatings Grant 6,503,340 - Gold , et al. January 7, 2 | 2003-01-07 |
| Process and composition for chromizing 400-series stainless steels Grant 6,387,194 - Zeigler , et al. May 14, 2 | 2002-05-14 |
| Method for chromizing small parts Grant 5,912,050 - Zeigler , et al. June 15, 1 | 1999-06-15 |
| Superconductor fiber elongation with a heated injected gas Grant 5,759,961 - Zeigler , et al. June 2, 1 | 1998-06-02 |
| Elongated heat exchanger tubes having internal stiffening structure Grant 5,511,613 - Mohn , et al. April 30, 1 | 1996-04-30 |
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