Inventor
Christopher J. Dyball
Inventor
Half Moon Bay, CA, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication17%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes10%
G07CTime or attendance registers10%
G07FCoin-freed or like apparatus10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B42DBooks7%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds7%
G06FElectric digital data processing7%
G11BInformation storage based on relative movement between record carrier and transducer7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
9,830,332File-attendant messaging20179,237,119'File-attendant messaging'20165,992,891'Tamper resistant identification card'19995,559,885'Two stage read-write method for transaction cards'19965,457,747'Anti-fraud verification system using a data card'19955,421,619'Laser imaged identification card'19955,412,727'Anti-fraud voter registration and voting system using a data card'19954,736,966'Data card with peelable protective layers'19884,692,402'Ultrathin optical recording medium with moisture barrier'19874,263,417'Polyester compositions containing crosslinkable copolymers'19814,217,433'Diethylene glycol bis(allyl carbonate) compositions containing crosslinkable copolymers'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1981Patents assigned to PENNWALT CORP (2)· patent assignee history
1980–1981Based in Amherst, NY, US· patent location history
1987–1999Patents assigned to DREXLER TECH (7)· patent assignee history
1987–1988Based in Redwood City, CA, US· patent location history
1995–1999Based in Half Moon Bay, CA, US· patent location history
2016–2017Patents assigned to GREEN ROOM NETWORKS INC (2)· patent assignee history
2016Based in Foster City, CA, US· patent location history
2017Based in San Francisco, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DREXLER TECH | 7 | 1987–1999 |
| GREEN ROOM NETWORKS INC | 2 | 2016–2017 |
| PENNWALT CORP | 2 | 1980–1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Half Moon Bay, California, US | 5 | 1995–1999 |
| Redwood City, California, US | 2 | 1987–1988 |
| Amherst, New York, US | 2 | 1980–1981 |
| San Francisco, California, US | 1 | 2017 |
| Foster City, California, US | 1 | 2016 |