Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5548887 | Method of making a transformer core from strips of amorphous steel | — | 1996-08-27 |
| 5528817 | Apparatus for making packets of amorphous steel strip for transformer core manufacture | David R. Freeman | 1996-06-25 |
| 5347706 | Method for making packets of amorphous steel strip for transformer core manufacture | David R. Freeman | 1994-09-20 |
| 5321883 | Apparatus for making a transformer core comprising strips of amorphous stell wrapped around the core window | David R. Freeman | 1994-06-21 |
| 5315754 | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | William K. Houser | 1994-05-31 |
| 5291648 | Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window | Donald E. Ballard | 1994-03-08 |
| 5285565 | Method for making a transformer core comprising amorphous steel strips surrounding the core window | Donald E. Ballard | 1994-02-15 |
| 5230139 | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | William K. Houser | 1993-07-27 |
| 5191700 | Method for making packets of amorphous metal strip for transformer-core manufacture | David R. Freeman | 1993-03-09 |
| 5093981 | Method for making a transformer core comprising amorphous metal strips surrounding the core window | Donald E. Ballard | 1992-03-10 |
| 5063654 | Method for making packets of amorphous metal strip for transformer-core manufacture | David R. Freeman | 1991-11-12 |
| 5050294 | Method for making a transformer core comprising amorphous steel strips surrounding the core window | Donald E. Ballard | 1991-09-24 |
| 4790064 | Method of manufacturing an amorphous metal transformer core and coil assembly | Donald E. Ballard | 1988-12-13 |
| 4789849 | Amorphous metal transformer core and coil assembly | Donald E. Ballard | 1988-12-06 |
| 4734975 | Method of manufacturing an amorphous metal transformer core and coil assembly | Donald E. Ballard | 1988-04-05 |
| 4724592 | Method of manufacturing a core and winding assembly | Robert H. Hunt | 1988-02-16 |
| 4646048 | Core and winding assembly with relieved core edges and method of manufacture thereof | Robert H. Hunt | 1987-02-24 |
| 4570141 | Wound core for an electric transformer | — | 1986-02-11 |
| 4467632 | Method of making a wound core for an electric transformer | — | 1984-08-28 |