Multi-chamber dispensing container for storing at least two substances, the extemporaneous mixture of these substances, and distribution of the mixture

US 6,189,688 Lapsed on the fee record

Overview Sources & methods

Lapsed Feb 20, 2005 on the fee record · From the USPTO record

Computed 20-year base term

First maintenance fee unpaid; grace period ended.

Named at grant Biodome · find this owner

Filed Jul 29, 1999 as application 09/355,520 · Granted Feb 20, 2001

Base term, 20 years from filing

Today

Lapsed Feb 20, 2005

1999 2026

Clock starts
Jul 29, 1999

No longer in force
Feb 20, 2005

Granted
Feb 20, 2001

Term would have run to
Jul 29, 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.

0 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 Jul 29, 1999, when this application, 09/355,520, was filed	Jul 29, 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	0 of 3 maintenance fees paid	lapsed Feb 20, 2005	High confidence
Computed term end	The steps above, in order	Feb 20, 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.

Multi-chamber dispensing container for storing at least two substances, the extemporaneous mixture of these substances, and distribution of the mixture

Lapsed Feb 20, 2005 on the fee record · From the USPTO record

20-year base term ended Jul 29, 2019

How we calculated this date

Sources