Inventor
Charles A. Brown
Inventor
Corvallis, OR, US
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer21%
G01RMeasuring electric variables9%
G05FSystems for regulating electric or magnetic variables9%
G06FElectric digital data processing9%
G06KGraphical data reading9%
B01DSeparation6%
H10DInorganic electric semiconductor devices6%
A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents3%
B41JTypewriters3%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors3%
PatentTitleYear
6,963,212'Self-testing input/output pad'20056,392,846'Coil wire lubricant for use in magnetic disk drives'20026,151,692'Integrated circuit having memory built-in self test (BIST) for different memory sizes and method of operation'20006,114,877'Timing circuit utilizing a clock tree as a delay device'20005,789,933'Method and apparatus for determining IDDQ'19985,757,203'Multiple on-chip IDDQ monitors'19985,547,887'Method of making a CMOS output pad driver with variable drive currents, ESD protection and improved leakage current behavior'19965,539,595'Structure and enclosure assembly for a disk drive'19965,447,695'Chemical breather filter assembly'19955,436,578'CMOS output pad driver with variable drive currents ESD protection and improved leakage current behavior'19955,367,417'Disk drive with flow-by chemical breather filter'19945,365,103'Punchthru ESD device along centerline of power pad'19945,346,518'Vapor drain system'19945,291,123'Precision reference current generator'19945,289,112'Light-emitting diode array current power supply including switched cascode transistors'19945,256,985'Current compensation technique for an operational amplifier'19935,229,899'Apparatus and method for controlling vapor phase within an enclosure'19935,124,856'Magnetic recording device with unitary filter medium to trap organic and inorganic chemical pollutants'19925,099,192'Light emitting diode array current power supply'19925,030,260'Disk drive breather filter'19914,864,216'Light emitting diode array current power supply'19894,390,980'Demultiplexing plural data streams'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983Patents assigned to CONTROL DATA CORP (1)· patent assignee history
1983Based in Chelmsford, MA, US· patent location history
1989–1998Patents assigned to HEWLETT PACKARD CO (9)· patent assignee history
1989–2005Based in Corvallis, OR, US· patent location history
1991–2002Patents assigned to IBM (8)· patent assignee history
1991–1993Based in San Jose, CA, US· patent location history
1994–2002Based in Los Gatos, CA, US· patent location history
1995Patents assigned to HEWLETT PACKARD CORP (1)· patent assignee history
2000–2005Patents assigned to AGILENT TECHNOLOGIES INC (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HEWLETT PACKARD CO | 9 | 1989–1998 |
| IBM | 8 | 1991–2002 |
| AGILENT TECHNOLOGIES INC | 3 | 2000–2005 |
| CONTROL DATA CORP | 1 | 1983 |
| HEWLETT PACKARD CORP | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Corvallis, OR, US | 13 | 1989–2005 |
| Los Gatos, California, US | 5 | 1994–2002 |
| San Jose, California, US | 3 | 1991–1993 |
| Chelmsford, Massachusetts, US | 1 | 1983 |