Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10119545 | 3-D sensorless conversion method and apparatus for pump differential pressure and flow | Andrew A. Cheng, James J. GU | 2018-11-06 |
| 10048701 | Dynamic linear control methods and apparatus for variable speed pump control | Andrew A. Cheng, James J. GU | 2018-08-14 |
| 9938970 | Best-fit affinity sensorless conversion means or technique for pump differential pressure and flow monitoring | Andrew A. Cheng, James J. GU | 2018-04-10 |
| 9897084 | Sensorless adaptive pump control with self-calibration apparatus for hydronic pumping system | Andrew A. Cheng, James J. GU | 2018-02-20 |
| 9846416 | System and flow adaptive sensorless pumping control apparatus for energy saving pumping applications | Andrew A. Cheng, James J. GU | 2017-12-19 |
| 9611856 | Mixed theoretical and discrete sensorless converter for pump differential pressure and flow monitoring | Andrew A. Cheng, James J. GU | 2017-04-04 |
| 9402496 | System for modular tile installation | David D. Oakey, John P. Bradford, Keith N. Gray | 2016-08-02 |
| 9085902 | Methods for installing modular tiles on a flooring surface | David D. Oakey, John P. Bradford, Keith N. Gray, Craig Jay Cochran | 2015-07-21 |
| 8468772 | Carpet tiles and carpet tile installations | David D. Oakey, John P. Bradford, Keith N. Gray | 2013-06-25 |
| 8434282 | System for carpet tile installation | David D. Oakey, John P. Bradford, Keith N. Gray | 2013-05-07 |
| 8381473 | System and method for floor covering installation | David D. Oakey, John P. Bradford, Keith N. Gray | 2013-02-26 |
| 7721502 | System and method for floor covering installation | David D. Oakey, John P. Bradford, Keith N. Gray, Craig Jay Cochran | 2010-05-25 |
| 7464510 | System and method for floor covering installation | David D. Oakey, John P. Bradford, Keith N. Gray | 2008-12-16 |
| 6694689 | Modular flooring systems and methods | David D. Oakey | 2004-02-24 |
| 6526704 | Padded raised flooring panels and coverings | Raymond A. Berard, Ray C. Anderson, David Whitley | 2003-03-04 |
| D455396 | Electrical connector | Marcus Smith | 2002-04-09 |
| 5522251 | Methods and apparatus for simulating the long-term effects of normal wear and maintenance of surfaces | — | 1996-06-04 |
| 5204798 | Metering accessory for molded case circuit breakers | — | 1993-04-20 |
| 5027091 | Molded case circuit interrupter rating plug keying and interlock arrangement | David J. Lesslie, Robert A. Morris, Alan J. Messerli, Alexander A. Krajewski | 1991-06-25 |
| 5015983 | Compact circuit interrupter having multiple ampere ratings | Donna C. DeRosier, Richard A. Dziura, Joseph M. Palmieri, Eric Juntwait, Linda Yvonne Jacobs | 1991-05-14 |
| 4907342 | Method of assembling a molded case circuit breaker current transformer assembly | Roger N. Castonguay, Joseph M. Palmieri | 1990-03-13 |
| 4884164 | Molded case electronic circuit interrupter | Richard A. Dziura, Ronald R. Russell | 1989-11-28 |
| 4884048 | Molded case circuit breaker current transformer assembly | Roger N. Castonguay, Joseph M. Palmieri | 1989-11-28 |
| 4806893 | Molded case circuit breaker actuator-accessory unit | Roger N. Castonguay, Robert A. Morris, Richard A. Dziura, Gregory DiVincenzo | 1989-02-21 |
| 4788620 | Static trip circuit breaker with automatic circuit trimming | — | 1988-11-29 |