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SUNPOWER INC

Overview
  • Total Patents
    323
  • GoodIP Patent Rank
    105,486
  • Filing trend
    ⇩ 83.0%
About

SUNPOWER INC has a total of 323 patent applications. It decreased the IP activity by 83.0%. Its first patent ever was published in 1977. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets engines, pumps and turbines, thermal processes and electrical machinery and energy are ICE CRYOGENIC ENGINEERING LTD, GLOBAL COOLING BV and GLOBAL COOLING B V.

Patent filings per year

Chart showing SUNPOWER INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Beale William T 77
#2 Wood James Gary 53
#3 Holliday Ezekiel S 51
#4 Redlich Robert W 33
#5 Unger Reuven Z-M 33
#6 Keiter Douglas E 29
#7 Unger Reuven Z 23
#8 Berchowitz David M 15
#9 Van Der Walt Nicholas R 14
#10 Gedeon David R 12

Latest patents

Publication Filing date Title
US2020263631A1 Preventing overstroke of free-piston stirling engine from loss of load
US2018112624A1 Free piston stirling engine that limits overstroke
US2018306140A1 Attachment of cylinders in the housing of free-piston stirling machines
US2017298865A1 Stirling engine or cooler heat exchanger
US2014353891A1 Compact flexure bearing spring for springing multiple bodies
WO2014014557A1 Driving an active vibration balancer to minimize vibrations at the fundamental and harmonic frequencies
WO2014014558A1 Balancing vibrations at harmonic frequencies by injecting harmonic balancing signals into the armature of a linear motor/alternator coupled to a stirling machine
US2014202172A1 Cold Finger For Cryocoolers
WO2012082697A1 Free piston stirling machine for extreme temperatures
WO2011102858A1 Internal position and limit sensor for free piston machines
KR20110091003A Multiple armature linear motor/alternator having magnetic spring with no fringe fields and increased power output
US2009206667A1 Hybrid electrical power source combining stirling engine driven alternator with supplementing electrical energy storage
GB0724410D0 Free piston Stirling engine with friction element to control excessive movement
US2008303289A1 Controller computing a virtual tuning capacitor for controlling a free-piston stirling engine driving a linear alternator
US2008295511A1 Connection of a free-piston stirling machine and a load or prime mover permitting differing amplitudes of reciprocation
US2008250784A1 Multi-piece piston for a free piston machine
US2008203678A1 Jointed head with temporary clamp for stirling machine
US2008122408A1 Electronic controller matching engine power to alternator power and maintaining engine frequency for a free-piston stirling engine driving a linear alternator
US2008061770A1 Detection of the instantaneous position of a linearly reciprocating member using high frequency injection
US2007256428A1 Vibration control of free piston machines through frequency adjustment