Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637475 | Bulk chemical delivery system | John N. Gregg, Robert M. Jackson, Craig Esser | 2003-10-28 |
| 6629627 | Level control systems for high purity chemical delivery systems | Stephen H. Siegele, John N. Gregg | 2003-10-07 |
| 6557593 | Refillable ampule and method re same | Stephen H. Siegele, John N. Gregg | 2003-05-06 |
| 6457494 | Chemical delivery system having purge system utilizing multiple purge techniques | John N. Gregg, Robert M. Jackson | 2002-10-01 |
| 6435229 | Bulk chemical delivery system | John N. Gregg, Robert M. Jackson, Craig Esser | 2002-08-20 |
| 6296025 | Chemical delivery system having purge system utilizing multiple purge techniques | John N. Gregg, Robert M. Jackson | 2001-10-02 |
| 6296026 | Chemical delivery system having purge system utilizing multiple purge techniques | John N. Gregg, Robert M. Jackson | 2001-10-02 |
| 6260588 | Bulk chemical delivery system | John N. Gregg, Robert M. Jackson, Craig Esser | 2001-07-17 |
| 6199599 | Chemical delivery system having purge system utilizing multiple purge techniques | John N. Gregg, Robert M. Jackson | 2001-03-13 |
| 6056024 | Bulk chemical delivery system | John N. Gregg, Robert M. Jackson, Craig Esser | 2000-05-02 |
| 6029717 | High aspect ratio containers for ultrahigh purity chemicals | Stephen H. Siegele, John N. Gregg | 2000-02-29 |
| 5950693 | Bulk chemical delivery system | John N. Gregg, Robert M. Jackson, Craig Esser | 1999-09-14 |
| 5878793 | Refillable ampule and method re same | Stephen H. Siegele, John N. Gregg | 1999-03-09 |
| 5711354 | Level control systems for high purity chemical delivery systems | Stephen H. Siegele, John N. Gregg | 1998-01-27 |
| 5607002 | Chemical refill system for high purity chemicals | Stephen H. Siegele, John N. Gregg | 1997-03-04 |
| 5590695 | Manifold systems for high purity chemical delivery systems | Stephen H. Siegele, John N. Gregg | 1997-01-07 |
| 5562132 | Bulk containers for high purity chemical delivery systems | Stephen H. Siegele, John N. Gregg | 1996-10-08 |
| 5465766 | Chemical refill system for high purity chemicals | Stephen H. Siegele, John N. Gregg | 1995-11-14 |