Battery charging cut-off circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11909255
APP PUB NO 20220216712A1
SERIAL NO

17702944

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

In one embodiment, a battery backup unit (BBU) cut-off and recharge circuit includes: a first transistor, a power entry connection connected to a main power supply, where power from the power entry connection flows to application circuits for an electronic device, and the first transistor is positioned between a BBU and the power entry connection, and a microcontroller, where the microcontroller is operative to: detect a loss of power from the main power supply, turn on the first transistor to enable the BBU to discharge through the power entry connection to application circuits, detect a status of charge (SOC) for the BBU, and upon detecting that the SOC is under a predefined threshold, set the BBU cut-off and recharge circuit to a lockdown state by turning off the first transistor.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CISCO TECHNOLOGY INC170 WEST TASMAN DRIVE SAN JOSE CA 95134-1706

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baek, Sung Kee San Ramon, US 37 805
Byers, Charles Calvin Wheaton, US 139 3076
Cheong, Wingo Fremont, US 4 69
Goergen, Joel Soulsbyville, US 33 45
Granzella, Steven Anthony Saratoga, US 4 11
Zhu, Xiqun Cupertino, US 18 100

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 20, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 20, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 20, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00