Johnson; Keith M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson; Keith M..The latest application filed is for "prosthetic heart valve system".
- Johnson; Keith M. - Champlin MN
- Johnson; Keith M. - Coon Rapids MN
| Patent | Date |
|---|---|
| Prosthetic heart valve system Grant 8,029,564 - Johnson , et al. October 4, 2 | 2011-10-04 |
| Prosthetic Heart Valve System App 20090198323 - Johnson; Keith M. ; et al. | 2009-08-06 |
| Prosthetic heart valve system Grant 7,503,929 - Johnson , et al. March 17, 2 | 2009-03-17 |
| Heart valve system Grant 7,468,073 - Johnson , et al. December 23, 2 | 2008-12-23 |
| Heart valve system Grant 7,189,258 - Johnson , et al. March 13, 2 | 2007-03-13 |
| Prosthetic heart valve system App 20060235510 - Johnson; Keith M. ; et al. | 2006-10-19 |
| Heart valve system App 20060195181 - Johnson; Keith M. ; et al. | 2006-08-31 |
| Prosthetic heart valve system Grant 7,033,390 - Johnson , et al. April 25, 2 | 2006-04-25 |
| Prosthetic heart valve system App 20040024451 - Johnson, Keith M. ; et al. | 2004-02-05 |
| Heart Valve System App 20030125805 - Johnson, Keith M. ; et al. | 2003-07-03 |
| Rotatable suturing ring for prosthetic heart valve Grant 5,766,240 - Johnson June 16, 1 | 1998-06-16 |
| Dynamic annulus heart valve employing preserved porcine valve leaflets Grant 5,449,384 - Johnson September 12, 1 | 1995-09-12 |
| Prosthetic heart valve Grant 4,808,180 - Johnson February 28, 1 | 1989-02-28 |
| Dynamic annulus heart valve and reconstruction ring Grant 4,339,831 - Johnson July 20, 1 | 1982-07-20 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 