IP Library › Granted Patent US 6,597,825
Granted Patent Utility Small
US 6,597,825 · Confirmation No. 4749

OPTICAL TAP FOR AN OPTICAL SWITCH

Inventors: Shifu Yuan, Xuezhe Zheng
Patented Case View Patent ↗
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 Code Description Pages PDF
2020-04-17 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-04-17 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-04-14 PA.. Power of Attorney 1 View
2020-04-14 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2020-04-14 N417 Electronic Filing System Acknowledgment Receipt 2 View
2019-04-09 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2019-04-09 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2019-04-04 PA.. Power of Attorney 1 View
2019-04-04 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2019-04-04 N417 Electronic Filing System Acknowledgment Receipt 2 View
2014-03-20 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-03-20 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-03-07 PA.. Power of Attorney 1 View
2014-03-07 MFEE.C.AD Maintenance Fee Address Change 2 View
2014-03-07 SES.REQ Assertion of entitlement to small entity status 1 View
2014-03-07 N417 Electronic Filing System Acknowledgment Receipt 2 View
2014-03-07 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2001-10-30 TRNA Transmittal of New Application 5 View
2001-10-30 SPEC Specification 16 View
2001-10-30 CLM Claims 8 View
2001-10-30 ABST Abstract 1 View
2001-10-30 DRW Drawings-only black and white line drawings 6 View
2001-10-30 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,597,825
App. No.
10/016,314
Filed
2001-10-30
Granted
2003-07-22
Art Unit
2874
PTA
-99 days