Security system for notification of an undesired condition at a monitored area with minimized false alarms

US 6,493,022 Surrendered on reissue

Overview Sources & methods

Surrendered on reissue Dec 6, 2005 · From the USPTO record

Computed 20-year base term

Surrendered on reissue Dec 6, 2005 · its term and maintenance fees continue in US RE38,908.

Named at grant Biscom Inc. · find this owner

Filed Mar 5, 1999 as application 09/263,360 · Granted Dec 10, 2002

Base term, 20 years from filing

Today

Surrendered Dec 6, 2005

1999 2026

Clock starts
Mar 5, 1999

No longer in force
Dec 6, 2005

Granted
Dec 10, 2002

Term would have run to
Mar 5, 2019

base term after the term ends Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

None

Term adjustment

No prosecution delay on this record.

None

Terminal disclaimer

No disclaimer on this record.

Not on record

Maintenance fees

USPTO's record of this patent carries no fee events. A gap in the record, not evidence of lapse.

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Mar 5, 1999, when this application, 09/263,360, was filed	Mar 5, 2019	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	High confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	No fee events in USPTO's record of this patent. A gap in the record, not evidence of lapse	no change	Medium confidence
Reissue	US RE38,908 issued Dec 6, 2005, and this patent's term continues in it (35 U.S.C. 251, 252)	surrendered Dec 6, 2005	High confidence
Surrendered on reissue	The steps above, in order	Dec 6, 2005	From the USPTO record

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Security system for notification of an undesired condition at a monitored area with minimized false alarms

Surrendered on reissue Dec 6, 2005 · From the USPTO record

20-year base term ended Mar 5, 2019

How we calculated this date

Sources