Inventor
David S. Pan
Inventor
Doylestown, PA, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H10Dprimary
H10DInorganic electric semiconductor devices32%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1020%
H10BElectronic memory devices12%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h108%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%
G06TImage data processing or generation, in general4%
G09BEducational or demonstration appliances4%
PatentTitleYear
10,989,702Laboratory tracer experiment system for medium characteristic inversion of karst conduit20215,621,813'Pattern recognition alignment system'19975,045,492'Method of making integrated circuit with high current transistor and CMOS transistors'19914,914,051'Method for making a vertical power DMOS transistor with small signal bipolar transistors'19904,774,202'Memory device with interconnected polysilicon layers and method for making'19884,706,102'Memory device with interconnected polysilicon layers and method for making'19874,646,425'Method for making a self-aligned CMOS EPROM wherein the EPROM floating gate and CMOS gates are made from one polysilicon layer'19874,598,460'Method of making a CMOS EPROM with independently selectable thresholds'19864,590,665'Method for double doping sources and drains in an EPROM'19864,574,467'N- well CMOS process on a P substrate with double field guard rings and a PMOS buried channel'19864,385,947'Method for fabricating CMOS in P substrate with single guard ring using local oxidation'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983Patents assigned to HARRIS CORP (1)· patent assignee history
1983Based in Satellite Beach, FL, US· patent location history
1986–1987Patents assigned to SOLID STATE SCIENT (4)· patent assignee history
1986–1990Based in Doylestown, PA, US· patent location history
1987–1990Patents assigned to SPRAGUE ELECTRIC CO (3)· patent assignee history
1991Patents assigned to ALLEGRO MICROSYSTEMS INC (1)· patent assignee history
1991–1997Based in Fremont, CA, US· patent location history
1997Patents assigned to ULTRATECH STEPPER INC (1)· patent assignee history
2021Based in Jinan, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SOLID STATE SCIENT | 4 | 1986–1987 |
| SPRAGUE ELECTRIC CO | 3 | 1987–1990 |
| ALLEGRO MICROSYSTEMS INC | 1 | 1991 |
| HARRIS CORP | 1 | 1983 |
| ULTRATECH STEPPER INC | 1 | 1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Doylestown, Pennsylvania, US | 7 | 1986–1990 |
| Fremont, California, US | 2 | 1991–1997 |
| Jinan, CN | 1 | 2021 |
| Satellite Beach, Florida, US | 1 | 1983 |