Inventor
David Duane Chapman
Inventor
Fountain Valley, CA, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing17%
H04BTransmission17%
H04LTransmission of digital information, e.g. telegraphic communication14%
G01RMeasuring electric variables11%
H03FAmplifiers11%
H04WWireless communication networks11%
G01SRadio direction-finding6%
C07KPeptides3%
G16BBioinformatics, i.e. information and communication technology [ict] specially adapted for genetic or protein-related data processing in computational molecular biology3%
G16CComputational chemistry3%
PatentTitleYear
10,866,325Satellite positioning system receivers with microelectromechanical systems oscillators202010,637,514Receiver with multi-spectrum parallel amplification202010,200,068Receiver with multi-spectrum parallel amplification201910,107,919Satellite positioning system receivers with microelectromechanical systems oscillators20189,979,420Receiver with multi-spectrum parallel amplification20189,515,690'Receiver with multi-spectrum parallel amplification'20169,356,639'Receiver with multi-spectrum parallel amplification'20169,246,664'Receiver with multi-spectrum parallel amplification'20165,703,792'Three dimensional measurement of molecular diversity'19974,752,928'Transaction analyzer'19884,748,556'Variable tracking word recognizer for detecting the occurrence of a dynamic-variable address'19884,701,696'Retargetable buffer probe'19874,541,100'Apparatus including a programmable set-up and hold feature'19854,434,488'Logic analyzer for a multiplexed digital bus'19844,425,643'Multi-speed logic analyzer'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1988Patents assigned to TEKTRONIX INC (6)· patent assignee history
1984–1988Based in Portland, OR, US· patent location history
1997Patents assigned to ARRIS PHARM CORP (1)· patent assignee history
1997Based in San Francisco, CA, US· patent location history
2016–2020Patents assigned to INTERSTATE ELECTRONICS CORP (8)· patent assignee history
2016–2020Based in Fountain Valley, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INTERSTATE ELECTRONICS CORP | 8 | 2016–2020 |
| TEKTRONIX INC | 6 | 1984–1988 |
| ARRIS PHARM CORP | 1 | 1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fountain Valley, California, US | 8 | 2016–2020 |
| Portland, OR, US | 6 | 1984–1988 |
| San Francisco, California, US | 1 | 1997 |