Monitoring system for dicing saws

US 6,168,500 Lapsed on the fee record

Overview Sources & methods

Lapsed Jan 2, 2009 on the fee record · From the USPTO record

Computed 20-year base term

Second maintenance fee unpaid; grace period ended.

Named at grant Kulick & Soffa Investments, Inc. · find this owner

Filed Nov 12, 1999 as application 09/439,140 · Granted Jan 2, 2001

Base term, 20 years from filing

Today

Lapsed Jan 2, 2009

1999 2026

Clock starts
Nov 12, 1999

No longer in force
Jan 2, 2009

Granted
Jan 2, 2001

Term would have run to
Nov 12, 2019

base term after the term ends fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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.

1 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.

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 Nov 12, 1999, when this application, 09/439,140, was filed	Nov 12, 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	1 of 3 maintenance fees paid	lapsed Jan 2, 2009	High confidence
Computed term end	The steps above, in order	Jan 2, 2009	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.

Monitoring system for dicing saws

Lapsed Jan 2, 2009 on the fee record · From the USPTO record

20-year base term ended Nov 12, 2019

How we calculated this date

Sources