Open-faced piston assembly

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11313318
APP PUB NO 20200271071A1
SERIAL NO

16874322

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and the piston face are provided. The openings are arranged to allow for a combustion reaction to propagate through the volume defined between the bottom of the piston ring assembly and the piston face such that at least a portion of an air and fuel mixture located in that volume is reacted.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MAINSPRING ENERGY INC3601 HAVEN AVENUE MENLO PARK CA 94025

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Svrcek, Matt Redwood City, US 50 247

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Oct 26, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Oct 26, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 26, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00