Method for Forming Partitions of Plasma Display Panel by Using Sandblasting Process

US 6,855,026 Surrendered on reissue

Surrendered on reissue May 4, 2010 · Low confidence

Computed 20-year base term

Surrendered on reissue May 4, 2010 · its term and maintenance fees continue in US RE41,312 and US RE42,405 and US RE44,445.

Held by Hitachi Plasma Patent Licensing Co., Ltd.

Filed Oct 8, 2003 as application 10/680,136 · Granted Feb 15, 2005

Base term, 20 years from filing

Today

Surrendered May 4, 2010

2002 2026

Clock starts
Apr 2, 2002

No longer in force
May 4, 2010

Granted
Feb 15, 2005

Term would have run to
Apr 2, 2022

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

Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.

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 Apr 2, 2002, when the earliest non-provisional application in its chain was filed (this one was filed Oct 8, 2003)	Apr 2, 2022	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 event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case"	no change	Low confidence
Reissue	US RE41,312 and US RE42,405 and US RE44,445 issued May 4, 2010, and this patent's term continues in it (35 U.S.C. 251, 252)	surrendered May 4, 2010	High confidence
Surrendered on reissue	The steps above, in order	May 4, 2010	Low confidence

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.

Method for Forming Partitions of Plasma Display Panel by Using Sandblasting Process

Surrendered on reissue May 4, 2010 · Low confidence

20-year base term ended Apr 2, 2022

How we calculated this date

Sources