Inventor

David A. Wallace

Inventor

Chelmsford, MA, US

Overview

24→

Patents

1984–2019

Patent span

General tagging of new technological developments

Primary field (CPC Y)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary

G06FElectric digital data processing17%

A61BDiagnosis14%

B01DSeparation12%

Y02CCapture, storage, sequestration or disposal of greenhouse gases [ghg]12%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%

F16HGearing5%

A45FTravelling or camp equipment: sacks or packs carried on the body2%

A61FFilters implantable into blood vessels2%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%

PatentTitleYear

10,420,415Container carrying system2019 9,845,380Ionic polyimide materials and methods of use2017 9,839,352'System, method and apparatus for enabling corneal topography mapping by smartphone'2017 8,474,538'Hydraulically actuated safety lock ring'2013 8,394,182'Crosslinked membrane and polymer for making same and method of using membrane'2013 7,247,191'Crosslinked and crosslinkable hollow fiber membrane and method of making same utility'2007 6,945,738'Method and apparatus for safety protection of temporary roof support'2005 6,932,859'Crosslinked and crosslinkable hollow fiber membrane and method of making same'2005 6,755,900'Crosslinked and crosslinkable hollow fiber mixed matrix membrane and method of making same'2004 6,394,968'Trans-scleral method and apparatus for measuring intraocular pressure'2002 5,165,415'Self contained hand held ultrasonic instrument for ophthalmic use'1992 5,142,682'Two-level priority arbiter generating a request to the second level before first-level arbitration is completed'1992 5,136,500'Multiple shared memory arrangement wherein multiple processors individually and concurrently access any one of plural memories'1992 4,964,037'Memory addressing arrangement'1990 4,903,197'Memory bank selection arrangement generating first bits identifying a bank of memory and second bits addressing identified bank'1990 4,848,186'Dual hydrostatic drive transmission'1989 4,817,432'Digital ultrasonic instrument for ophthalmic use'1989 4,807,495'Temperature-dependent infinitely variable ratio transmission control system and method'1989 4,809,276'Memory failure detection apparatus'1989 D0298856'Ophthalmic instrument'1988 4,747,296'Electronic tonometer with baseline nulling system'1988 4,608,631'Modular computer system'1986 4,597,648'Keratometer'1986 4,484,273'Modular computer system'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1992Based in Chelmsford, MA, US· patent location history

1988–1989Patents assigned to DESIGN TEAM PARTNERS (3)· patent assignee history

1988–1992Based in Beverly Hills, CA, US· patent location history

1989–1990Patents assigned to HUTTON PRC TECHNOLOGY PARTNERS (2)· patent assignee history

1989Based in Walla Walla, WA, US· patent location history

1990–1992Patents assigned to BULL HN INFORMATION SYST (3)· patent assignee history

2004–2013Patents assigned to CHEVRON USA INC (3)· patent assignee history

2004–2013Patents assigned to UNIV TEXAS (3)· patent assignee history

2004–2005Based in Dunwoody, GA, US· patent location history

2007–2013Based in Smyrna, GA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BULL HN INFORMATION SYST	3	1990–1992
CHEVRON USA INC	3	2004–2013
DESIGN TEAM PARTNERS	3	1988–1989
UNIV TEXAS	3	2004–2013
HUTTON PRC TECHNOLOGY PARTNERS	2	1989–1990

Locations

Location	Patents	Span
Chelmsford, Massachusetts, US	7	1984–1992
Beverly Hills, California, US	4	1988–1992
Smyrna, Georgia, US	2	2007–2013
Dunwoody, Georgia, US	2	2004–2005
Walla Walla, Washington, US	2	1989