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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CITY UNIVERSITY OF HONG KONG	83 TAT CHEE AVENUE KOWLOON

International Classification(s)

• H01M:PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT....

• 2020 Application Filing Year
• H01M Class
• 7558 Applications Filed
• 4012 Patents Issued To-Date
• 53.09 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chen, Ao	Kowloon, HK	27	30
# of filed Patents : 27 Total Citations : 30
Tang, Zijie	Pak Shek Kok, HK	18	8
# of filed Patents : 18 Total Citations : 8
Zhi, Chunyi	Shatin, HK	51	93
# of filed Patents : 51 Total Citations : 93

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• H01M Class

• 0 % this patent is cited more than
• 1 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Oct 2, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 2, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 2, 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 02, 2024	US,11949117,B2   US11949117B2	GRANTED PATENT AS SECOND PUBLICATION
October 14, 2021	US,20210320286,A1   US20210320286A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2015/0244,324

POWER AMPLIFICATION DEVICE AND TRANSMITTER

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Abstract

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A power amplification device includes: a first power-amplifier array including a plurality of first switching elements that constitute a class-D power amplifier for a higher bits; a second power-amplifier array including a plurality of second switching elements that constitute a class-D power amplifier for a lower bits; and a capacitor array including a plurality of capacitance elements. The second switching elements have a larger on-resistance than the first switching elements. The first power-amplifier array is arranged between the second power-amplifier array and the capacitor array.

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Description

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