Patents per Year
Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6112111 | Method and apparatus for location of a catheter tip | — | 2000-08-29 |
| 5749835 | Method and apparatus for location of a catheter tip | — | 1998-05-12 |
| 5743873 | Methods for using catheter connectors and portals, and methods of assembly | Qingsheng Cai, William L. Beling, Theodore A. Johnson | 1998-04-28 |
| 5632729 | Catheter connector | Qingsheng Cai, William L. Beling, Theodore A. Johnson | 1997-05-27 |
| 5613945 | Portal assembly | Qingsheng Cai, William L. Beling, Theodore A. Johnson | 1997-03-25 |
| 5562618 | Portal assembly and catheter connector | Qingsheng Cai, William L. Beling, Theodore A. Johnson | 1996-10-08 |
| 5558641 | Hybrid portal and method | Mark D. Anderson, Theodore A. Johnson, William L. Beling, Cai Qingsheng | 1996-09-24 |
| 5387192 | Hybrid portal and method | Mark D. Anderson, Theodore A. Johnson, William L. Beling, Cai Qingsheng | 1995-02-07 |