Inventor
Walter J. Hall
Inventor
Evanston, IL, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Hprimary
H01HElectric switches32%
B23KSoldering or unsoldering26%
H05KPrinted circuits11%
Y10TTechnical subjects covered by former us classification11%
E05BLocks5%
E05CBolts or fastening devices for wings, specially for doors or windows5%
F27BFurnaces, kilns, ovens or retorts in general5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
6,146,448'Flux management system for a solder reflow oven'20005,573,688'Convection/infrared solder reflow apparatus'19965,345,061'Convection/infrared solder reflow apparatus utilizing controlled gas flow'19944,986,578'Door latching arrangement for an enclosure'19914,792,302'Continuous solder reflow system'19884,757,780'Apparatus for solder removal'19884,636,602'Linear operating mechanism for electrical switches'19874,596,906'Arrangement for providing independent rotary and linear drive outputs for high-voltage switches'19864,562,324'Electrical contact for use in a current-interrupting unit'19854,541,358'Method and apparatus for solder removal'19854,384,185'Circuit interrupting device'19834,338,499'Anti-paralleling apparatus for high-voltage gear'19824,324,959'Pre-insertion resistor mechanism for a circuit interrupting device'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1991Patents assigned to S & C ELECTRIC CO (7)· patent assignee history
1982–1991Based in Evanston, IL, US· patent location history
1985–1988Patents assigned to HTC CORP (2)· patent assignee history
1985–1988Based in New Corner, MA, US· patent location history
1988Patents assigned to DYNAPERT HTC CORP (1)· patent assignee history
1988Based in Newton Corner, MA, US· patent location history
1994–1996Patents assigned to VITRONICS CORP (2)· patent assignee history
1994–2000Based in Waltham, MA, US· patent location history
2000Patents assigned to SOLTEC BV (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| S & C ELECTRIC CO | 7 | 1982–1991 |
| HTC CORP | 2 | 1985–1988 |
| VITRONICS CORP | 2 | 1994–1996 |
| DYNAPERT HTC CORP | 1 | 1988 |
| SOLTEC BV | 1 | 2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Evanston, Illinois, US | 7 | 1982–1991 |
| Waltham, Massachusetts, US | 3 | 1994–2000 |
| New Corner, Massachusetts, US | 2 | 1985–1988 |
| Newton Corner, Massachusetts, US | 1 | 1988 |