Inventor

Martin H. Ramsden

Inventor

Lawrenceville, GA, US

Overview

18→

Patents

1999–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 18 as inventor

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

H02Jprimary

H02JElectric power networks20%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy9%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers9%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

C12NMicroorganisms or enzymes6%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture6%

G06FElectric digital data processing6%

H04MTelephonic communication6%

H05KPrinted circuits6%

PatentTitleYear

9,794,675'Circuit assembly for compact acoustic device'2017 9,491,880'Circuit assembly for compact acoustic device'2016 7,146,015'Frequency threshold audio activity detector'2006 7,088,838'Speakerphone accessory assembly'2006 6,998,818'Charging circuit with two levels of safety'2006 6,967,467'Method and apparatus for current delegation to a plurality of loads'2005 6,897,634'Rechargeable battery having charging indicating means'2005 6,850,040'Charge boost battery charging and protection circuit'2005 6,828,759'Circuit for regulating current to multiple batteries in a battery charger'2004 6,509,659'Cable or module identification apparatus and method'2003 6,479,968'Method of charging a battery utilizing dynamic cable compensation'2002 6,445,159'Power sharing method and circuit for simultaneously charging multiple loads'2002 6,388,449'Circuit and method for auto-calibration of an active load'2002 6,297,032'Recombinant cephalosporin C amidohydrolase in cephalosporin biosynthesis'2001 6,268,715'Voltage profile charge control system'2001 6,249,107'Method of charging a battery in a mobile charger'2001 D0417189'Travel charger'1999 5,919,648'Industrial enzymes'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2006Patents assigned to MOTOROLA INC (14)· patent assignee history

1999–2001Patents assigned to GLAXO GROUP LTD (2)· patent assignee history

1999–2017Based in Lawrenceville, GA, US· patent location history

1999–2001Based in Ulverston, GB· patent location history

2001Based in Lilburn, GA, US· patent location history

2016–2017Patents assigned to Google Technology Holdings LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MOTOROLA INC	14	1999–2006
GLAXO GROUP LTD	2	1999–2001
Google Technology Holdings LLC	2	2016–2017

Locations

Location	Patents	Span
Lawrenceville, Georgia, US	15	1999–2017
Ulverston, GB	2	1999–2001
Lilburn, Georgia, US	1	2001