Inventor

David E. Lewis

Inventor

Black Forest, CO, US

Overview

51→

Patents

1976–2021

Patent span

Physics

Primary field (CPC G)

Patents· 51 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 transducer23%

C07DHeterocyclic compounds10%

H02KDynamo-electric machines10%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments7%

A23BPreservation of foods, foodstuffs or non-alcoholic beverages6%

A61LMethods or apparatus for sterilising materials or objects in general6%

A01NPreservation of bodies of humans or animals or plants or parts thereof4%

G01NInvestigating or analysing materials by determining their chemical or physical properties3%

H01JElectric discharge tubes or discharge lamps3%

Y02ATechnologies for adaptation to climate change3%

PatentTitleYear

11,116,778Prodrugs of ALOX-15 inhibitors and methods of using the same2021 8,853,454'Quaternary ammonium salts as microbe inhibitors'2014 8,765,982'Synergistic anticoagulant composition'2014 8,427,058'Traveling-wave tube turn-off body energy circuit'2013 7,893,620'Traveling-wave tube turn-off body energy circuit'2011 7,528,144'Molecules and methods for fluorescence microscopy'2009 7,323,436'Adduct having an acidic solution of sparingly-soluble group IIA complexes'2008 6,902,753'Acidic solution of sparingly-soluble group IIA complexes'2005 6,881,424'Highly acidic metalated organic acid'2005 6,808,730'Highly acidic metalated organic acid as a food additive'2004 6,670,170'Temperature-regulated cell perifusion chamber'2003 6,572,908'Highly acidic metalated organic acid as a food additive'2003 6,436,891'Adduct having an acidic solution of sparingly-soluble group IIA complexes'2002 6,434,087'Optical disc system and method for controlling bias coil and light source to process information on a storage medium'2002 6,418,097'Analog to digital converter assembly for normalizing servo error signals and multiplexing reference voltage inputs and digital outputs and improved optical drive system including same'2002 6,410,505'Dimeric non-azo naphthalimides and uses for the same'2002 6,324,041'Protection circuit for traveling wave tubes having multiple input tones'2001 6,317,391'Optical disc system having current monitoring circuit with improved bias coil assembly and controller for laser driver and method for operating same'2001 6,317,393'Method and apparatus for controlling an optical head relative to an initial track and a target track on a storage medium having data arranged thereon in tracks'2001 6,278,665'Optical disc system including current monitoring circuit assembly having controller with improved optics module and laser driver and method for operating same'2001 6,266,306'Analog to digital converter and assembly for use in optical drive system to normalize servo error signals and multiplex reference voltage inputs and digital outputs'2001 6,251,302'Chemically substituted chromophores and fluorophores of high solubility and their use as fluid visualizing agents'2001 6,243,336'Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal and focus capture method for use in same'2001 6,236,625'Optical disc system having current monitoring circuit with controller for laser driver and method for operating same'2001 6,122,232'Isolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including same'2000 6,069,857'Optical disc system having improved circuitry for performing blank sector check on readable disc'2000 6,058,081'Optical drive system having servomotor operated relative to maximum quad sum signal'2000 5,917,045'Dimeric non-azo naphthalimides and uses for same'1999 5,878,015'Laser driver for controlling electrical current passed to a laser in an optical disc system'1999 5,796,703'Apparatus for controlling an electrical current passed to a writing device in an optical storage system'1998 5,766,600'Non-azo naphtalimide dyes and uses for same'1998 5,729,511'Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal'1998 5,721,714'Method and apparatus for controlling bias levels in a magneto-optical recording device'1998 5,719,836'Optical seeking method and apparatus generating track count signal from tracking error signal and data signal'1998 5,700,979'Flexible strip cable with extension for testing'1997 5,666,333'Biasing level controller for magneto-optical recording device'1997 5,659,526'Optical seeking apparatus with track crossing signal generation using a corrected tracking error signal having a constant amplitude during periods of data'1997 5,581,526'Optical seeking method and apparatus with track counting using tracking error signal having constant amplitude during data segments'1996 5,565,551'Non-azo naphthalimide dyes and uses for same'1996 5,472,878'Fluorescent method for monitoring oil degradation'1995 5,420,136'Eradication of pathogenic biological contaminants using non-azo naphthalimide dyes'1995 5,308,773'Non-azo 1,8-naphthalimide dyes for the detection and quantitation of a paramagnetic metal cation in a non-aqueous medium'1994 5,235,045'Non-azo naphthalimide dyes'1993 4,914,645'Optical disk tracking and seeking systems and specific track formats using servo areas'1990 4,849,082'Ion implantation of zirconium alloys with hafnium'1989 4,779,253'Sampled servo for an optical disk drive'1988 4,456,548'Composition and method for making conductive polymers'1984 4,224,644'Method and apparatus for controlling a tape player/recorder for retrieving and playing prerecorded information'1980 D0244917'Automobile actuated wall proximity indicator'1977 3,986,498'Remote ECG monitoring system'1976 3,935,534'Converter-tuner for information transmission system'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1980Based in Orange, CA, US· patent location history

1977–2014Patents assigned to LEWIS DAVID E (3)· patent assignee history

1993–2002Patents assigned to MICROBIOMED CORP (9)· patent assignee history

1993–2002Based in Brookings, SD, US· patent location history

1996–2002Patents assigned to DISCOVISION ASS (20)· patent assignee history

1996–2002Based in Black Forest, CO, US· patent location history

2001–2013Based in Torrance, CA, US· patent location history

2002–2014Patents assigned to MIONIX CORP (7)· patent assignee history

2002–2014Based in Eau Claire, WI, US· patent location history

2011–2013Patents assigned to L 3 COMM ELECTRON TECHNOLOGIES INC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DISCOVISION ASS	20	1996–2002
MICROBIOMED CORP	9	1993–2002
MIONIX CORP	7	2002–2014
LEWIS DAVID Eself	3	1977–2014
L 3 COMM ELECTRON TECHNOLOGIES INC	2	2011–2013

Locations

Location	Patents	Span
Black Forest, CO, US	20	1996–2002
Eau Claire, WI, US	9	2002–2014
Brookings, SD, US	8	1993–2002
Orange, California, US	4	1976–1980
Torrance, California, US	3	2001–2013