Expired patent discovery

Potentially open patents, in a cleaner research view.

Scan older patents by domain, year, and jurisdiction to find technical routes that may now be open for reuse.

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3

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2001-2026

Expired patent

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3 results

2 domainsPotentially expired only
2001USUS6191946

Heat spreader with excess solder basin

Potentially expiredThermal systemsHeat-spreading plates

The apparatus is a heat spreader for attachment to a device to be cooled, with heat pipes attached within holes in the heat spreader.

Assignee

THERMAL CORP [US]

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2004USUS6829144

Flip chip package with heat spreader allowing multiple heat sink attachment

Potentially expiredThermal systemsHeat-spreading plates

chip package is provided with multiple ways of attaching a heat sink directly to the chip carrier.

Assignee

IBM [US]

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2026USUS12570965

Herbicide-resistant rice plants, polynucleotides encoding herbicide-resistant acetohydroxyacid synthase large subunit proteins, and methods of use

Potentially expiredMobility / storage

Herbicide-resistant rice plants, isolated polynucleotides that encode herbicide resistant and wild-type acetohydroxy-acid synthase large subunit 1 (AHASL1) polypeptides, and the amino acid sequences of these polypeptides, are described.

Assignee

INSTITUTO NACIONAL DE TECHNOLOGIA AGROPECUARIA

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