LexDanaLexDanabeta
Inventor

B. Ramamurthy Acharya

Inventor
Fremont, CA, US

Overview

51→
Patents
2000–2017
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 transducer42%
Y10TTechnical subjects covered by former us classification14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
F16HGearing5%
C23CCoating metallic material4%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology3%
F03CPositive-displacement engines driven by liquids3%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids3%
F16DCouplings for transmitting rotation2%
PatentTitleYear
9,824,710'Heat-assisted magnetic recording (HAMR) medium with thermal barrier layer in multilayered heat-sink structure'20179,542,968'Single layer small grain size FePT:C film for heat assisted magnetic recording media'20179,449,633'Smooth structures for heat-assisted magnetic recording media'20169,401,170'Perpendicular magnetic recording medium with epitaxial exchange coupling layer'20169,269,480'Systems and methods for forming magnetic recording media with improved grain columnar growth for energy assisted magnetic recording'20169,218,850'Exchange break layer for heat-assisted magnetic recording media'20159,190,094'Perpendicular recording media with grain isolation initiation layer and exchange breaking layer for signal-to-noise ratio enhancement'20159,177,585'Magnetic media capable of improving magnetic properties and thermal management for heat-assisted magnetic recording'20159,028,985'Recording media with multiple exchange coupled magnetic layers'20159,005,781'Magnetic recording medium for perpendicular magnetic recording'20158,993,133'Intermediate layer for perpendicular magnetic recording medium with high permeability grain boundaries'20158,947,987'Systems and methods for providing capping layers for heat assisted magnetic recording media'20158,945,732'Dual-magnetic layer high anisotropy media with orientation initialization layer'20158,941,950'Underlayers for heat assisted magnetic recording (HAMR) media'20158,889,275'Single layer small grain size FePT:C film for heat assisted magnetic recording media'20148,867,322'Systems and methods for providing thermal barrier bilayers for heat assisted magnetic recording media'20148,787,130'Systems and methods for providing heat assisted magnetic recording media configured to couple energy from a near field transducer'20148,787,124'Systems and methods for extracting Curie temperature distribution in heat assisted magnetic recording media'20148,758,912'Interlayers for magnetic recording media'20148,635,867'Hydrostatic transmission'20148,609,263'Systems and methods for forming magnetic media with an underlayer'20138,605,555'Recording media with multiple bi-layers of heatsink layer and amorphous layer for energy assisted magnetic recording system and methods for fabricating the same'20138,530,065'Composite magnetic recording medium'20138,488,276'Perpendicular magnetic recording medium with grain isolation magnetic anistropy layer'20138,394,243'Sputtered cobalt oxide for perpendicular magnetic recording medium with low media noise'20138,277,962'Magnetic recording medium for perpendicular magnetic recording'20128,173,282'Perpendicular magnetic recording medium with an ordering temperature reducing layer'20128,110,298'Media for high density perpendicular magnetic recording'20128,100,204'Mounting of hydrostatic transmission for riding lawn mower'20128,028,776'Integrated hydrostatic transmission for left and right wheel drive'20117,901,802'Magnetic recording medium for perpendicular magnetic recording'20117,886,534'Integrated hydrostatic transmission assembly'20117,845,170'Drive wheel with an integral fan for a hydraulic power unit'20107,677,371'Mower with automatic parking brake'20107,631,496'Hydraulic unit with integral oil cooler'20097,592,079'Method to improve remanence-squareness-thickness-product and coercivity profiles in magnetic media'20097,523,611'Hydrostatic transmission with external manifold'20097,455,132'Hydraulic axle combination'20087,431,635'Internal gear grinding method'20087,264,892'Magnetic recording medium and magnetic storage apparatus'20077,255,544'Housing including shock valves for use in a gerotor motor'20077,241,517'Magnetic recording medium and magnetic storage apparatus'20077,241,516'Soft magnetic underlayer with exchange coupling induced anisotropy for perpendicular magnetic recording media'20076,893,735'Magnetic recording medium with anti-ferromagnetically coupled magnetic layers, and magnetic storage apparatus'20056,773,833'Magnetic storage medium having improved thermal stability and a magnetic storage device using such a high-density magnetic storage medium'20046,677,051'Magnetic recording medium with dual magnetic layers having specific composition requirements and a magnetic storage apparatus'20046,623,875'Magnetic recording medium and magnetic storage apparatus'20036,610,424'Magnetic recording medium and magnetic storage apparatus'20036,551,728'Magnetic recording medium and magnetic storage apparatus'20036,086,345'Two-piece balance plate for gerotor motor'20006,062,835'Gerotor motor and parking lock assembly therefor'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000Based in Hopkins, MN, US· patent location history
2003–2007Patents assigned to FUJITSU LTD (8)· patent assignee history
2003–2004Based in Kawasaki, JP· patent location history
2007–2014Patents assigned to PARKER HANNIFIN CORP (11)· patent assignee history
2007–2014Based in Johnson City, TN, US· patent location history
2007–2009Based in Cupertino, CA, US· patent location history
2011–2017Based in Fremont, CA, US· patent location history
2012–2016Patents assigned to ACHARYA B RAMAMURTHY (17)· patent assignee history
2013–2017Patents assigned to WD MEDIA LLC (21)· patent assignee history
2013–2016Patents assigned to YUAN HUA (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
WD MEDIA LLC212013–2017
ACHARYA B RAMAMURTHYself172012–2016
PARKER HANNIFIN CORP112007–2014
FUJITSU LTD82003–2007
YUAN HUA72013–2016
Locations
LocationPatentsSpan
Fremont, California, US282011–2017
Johnson City, TN, US112007–2014
Kawasaki, JP52003–2004
Cupertino, California, US42007–2009
Hopkins, Minnesota, US22000