IP Library › Granted Patent US 6,437,720
Granted Patent Utility
US 6,437,720 · Confirmation No. 3891

CODE INDEPENDENT CHARGE TRANSFER SCHEME FOR SWITCHED-CAPACITOR DIGITAL-TO-ANALOG CONVERTER

Inventors: Guangming Yin, Bo Zhang
Patented Case View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2021-10-07 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-10-07 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-10-05 PA.. Power of Attorney 2 View
2021-10-05 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2021-10-05 N417 Electronic Filing System Acknowledgment Receipt 2 View
2020-12-18 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2009-02-11 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2009-02-11 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2009-02-05 PA.. Power of Attorney 1 View
2009-02-05 R3.73 Assignee showing of ownership per 37 CFR 3.73 1 View
2009-02-05 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-02-16 TRNA Transmittal of New Application 2 View
2001-02-16 SPEC Specification 10 View
2001-02-16 CLM Claims 4 View
2001-02-16 ABST Abstract 1 View
2001-02-16 DRW Drawings-only black and white line drawings 3 View
2001-02-16 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,437,720
App. No.
09/785,690
Filed
2001-02-16
Granted
2002-08-20
Pub. No.
US20020113724A1
Art Unit
2819
PTA
-70 days