Inventor
David A. Williams
Inventor
Andover, MA, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Hprimary
H02HEmergency protective circuit arrangements14%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems14%
A21DTreatment of flour or dough for baking, e.g. by addition of materials7%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for7%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors7%
G06FElectric digital data processing7%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes7%
G07BTicket-issuing apparatus7%
H01BCables7%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light7%
PatentTitleYear
8,087,433'Methods and apparatus for forming cable media'20127,333,350'Self driven synchronous rectifier shutdown circuit and method'20087,274,575'AC coupled bias circuit for power converters'20077,203,041'Primary side turn-off of self-driven synchronous rectifiers'20077,023,005'Gain compensation for optocoupler feedback circuit'20066,683,443'Soft start circuit for regulated power supply'20046,535,947'Methods, systems and computer program products for logically segmenting devices on a universal serial bus'20035,225,990'Apparatus and methods for baggage reconciliation and location'19933,989,858'Rusk based food snack'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993Patents assigned to BRALS LTD (1)· patent assignee history
1993Based in Berkhampstead, GB· patent location history
2003Based in Raleigh, NC, US· patent location history
2004–2006Patents assigned to TEXAS INSTRUMENTS INC (2)· patent assignee history
2004–2006Based in Glen Ellyn, IL, US· patent location history
2007–2008Patents assigned to POWER ONE INC (3)· patent assignee history
2007–2008Based in Andover, MA, US· patent location history
2012Patents assigned to COMMSCOPE INC (1)· patent assignee history
2012Patents assigned to HAYES TRENT M (1)· patent assignee history
2012Based in Hickory, NC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| POWER ONE INC | 3 | 2007–2008 |
| TEXAS INSTRUMENTS INC | 2 | 2004–2006 |
| BRALS LTD | 1 | 1993 |
| COMMSCOPE INC | 1 | 2012 |
| HAYES TRENT M | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Andover, Massachusetts, US | 3 | 2007–2008 |
| Glen Ellyn, Illinois, US | 2 | 2004–2006 |
| Hickory, NC, US | 1 | 2012 |
| Raleigh, NC, US | 1 | 2003 |
| Berkhampstead, GB | 1 | 1993 |