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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
ENGINUITY POWER SYSTEMS INC	730 SOUTH WASHINGTON STREET ALEXANDRIA VA 22314

International Classification(s)

• F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....
• F02B:INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENG....
• F01B:MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DIS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Jorda, Scott G	Westminster, US	2	2
Scheer, Dennis K	Birmingham, US	14	205
Warren, James C	Alexandria, US	25	176

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Jun 21, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Jun 21, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 21, 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
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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

Full Text

US Patent Application No: 11203952

Opposed piston engine with variable compression ratio

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