Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9194519 | Gasket for parabolic ramp self restraining bell joint | William W. Holmes, IV | 2015-11-24 |
| 9121532 | Gasket for parabolic ramp self restraining bell joint | William W. Holmes, IV, Jim Lambert | 2015-09-01 |
| 8925977 | Simplified low insertion force sealing device capable of self restraint and joint deflection | William W. Holmes, IV | 2015-01-06 |
| 8870188 | Gasket for parabolic ramp self restraining bell joint | William W. Holmes, IV, Jim Lambert | 2014-10-28 |
| 8697251 | Protective coating for metal surfaces | A Michael Horton | 2014-04-15 |
| 8544851 | Gasket for parabolic ramp self restraining bell joint | William W. Holmes, IV | 2013-10-01 |
| 8533926 | Method of coupling at least two conduits | William W. Holmes, IV | 2013-09-17 |
| 8528184 | Method of creating and maintaining a sealed interface between a spigot and bell | William W. Holmes, IV | 2013-09-10 |
| 8511691 | Simplified low insertion force sealing device capable of self restraint and joint deflection | William W. Holmes, IV | 2013-08-20 |
| 8511690 | Simplified low insertion force sealing device capable of self restraint and joint deflection | William W. Holmes, IV | 2013-08-20 |
| 8303179 | Temperature-sensing and transmitting assemblies, programmable temperature sensor units, and methods of making and using them | Laurence Clifford | 2012-11-06 |
| 8293378 | Anti-corrosive coating for metal surfaces | A. Michael Horton, James Weber | 2012-10-23 |
| 7432744 | Comparator circuit with built-in programmable floating gate voltage reference | — | 2008-10-07 |
| 7429888 | Temperature compensation for floating gate circuits | — | 2008-09-30 |
| 7345522 | Ramp down method and apparatus for stabilizing charge on a floating gate | — | 2008-03-18 |
| 7345523 | Tunnel device level shift circuit | — | 2008-03-18 |
| 7207606 | Mechanical pipe joint, gasket, and method for restraining pipe spigots in mechanical pipe joint bell sockets | William W. Holmes, IV, Daniel A. Copeland | 2007-04-24 |
| 7113017 | Floating gate analog voltage level shift circuit and method for producing a voltage reference that operates on a low supply voltage | — | 2006-09-26 |
| D515673 | Pipe gland ear | Daniel A. Copeland | 2006-02-21 |
| D514669 | Pipe gland ear | Daniel A. Copeland | 2006-02-07 |
| D513793 | Pipe gland | Daniel A. Copeland | 2006-01-24 |
| 6914812 | Tunnel device level shift circuit | — | 2005-07-05 |
| 6898123 | Differential dual floating gate circuit and method for programming | — | 2005-05-24 |
| 6894928 | Output voltage compensating circuit and method for a floating gate reference voltage generator | — | 2005-05-17 |
| 6870764 | Floating gate analog voltage feedback circuit | — | 2005-03-22 |