Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10518228 | Device and method for generating bubbles, use of the device and a fuel cell comprising the device | David Ward | 2019-12-31 |
| 9385391 | Fuel cells | Brian Clarkson | 2016-07-05 |
| 5406540 | Optical disk recording performance | Peter R. Helfet, Quentin J. Lister, Mark J. Broadbent | 1995-04-11 |
| 5137617 | Optical disk manufacture | Peter R. Helfet, Jitka Brynjolffssen | 1992-08-11 |
| 5008687 | Data storage medium | Peter R. Helfet, Michael John Abrams | 1991-04-16 |
| 4928132 | Optical data storage medium | Robert M. Pettigrew, Victor C. Humberstone, Keith Gardner, Peter R. Helfet | 1990-05-22 |
| 4866696 | Pre-formatted moth-eye type optical data storage member and method | Peter R. Helfet, Philip A. Storey | 1989-09-12 |
| 4802736 | Interferometers | Keith Gardner, Robert M. Pettigrew, Walter T. Welford | 1989-02-07 |
| 4724444 | Data storage medium | Robert M. Pettigrew, Victor C. Humberstone, Keith Gardner, Peter R. Helfet | 1988-02-09 |
| 4703469 | Optical data recording using radiation of different characteristics | Robert M. Pettigrew, Keith Gardner | 1987-10-27 |
| 4657780 | Manufacture of diffraction gratings | Robert M. Pettigrew | 1987-04-14 |