Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10251450 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2019-04-09 |
| 9474323 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2016-10-25 |
| 8677652 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2014-03-25 |
| 8151489 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2012-04-10 |
| 7930839 | Inflatable support system for an article of footwear | Paul E. Litchfield | 2011-04-26 |
| 7735241 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2010-06-15 |
| 7721465 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2010-05-25 |
| 7600331 | Inflatable support system for an article of footwear | Paul E. Litchfield | 2009-10-13 |
| 7513067 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield, Brian Christensen, Mark Busse +1 more | 2009-04-07 |
| 7418745 | Playyard with bassinet | Chinawut Paesang | 2008-09-02 |
| 7409780 | Bellowed chamber for a shoe | William Marvin | 2008-08-12 |
| 7383648 | Inflatable support system for an article of footwear | Paul E. Litchfield | 2008-06-10 |
| 7340851 | Shoe having an inflatable bladder | Paul E. Litchfield, Paul Davis, William Marvin | 2008-03-11 |
| 7337560 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2008-03-04 |
| 7278445 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield, Brian Christensen, Mark Busse +1 more | 2007-10-09 |
| 7263729 | Playyard with changing platform and bassinet | Chinawut Paesang | 2007-09-04 |
| 7152625 | Combination check valve and release valve | William Marvin, Paul Davis, Paul E. Litchfield | 2006-12-26 |
| 7047670 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2006-05-23 |
| 6988329 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2006-01-24 |
| 6785985 | Shoe having an inflatable bladder | William Marvin, Paul Davis, Paul E. Litchfield | 2004-09-07 |