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

Patent Owner(s)

Patent Owner	Address
LORAM MAINTENANCE OF WAY INC	3900 ARROWHEAD DRIVE HAMEL MN 55340

International Classification(s)

• G01D:MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VAR....

• 2003 Application Filing Year
• G01D Class
• 616 Applications Filed
• 192 Patents Issued To-Date
• 31.17 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dyavanapalli, Venkat	Glendale Heights, IL	8	40
# of filed Patents : 8 Total Citations : 40
Kumar, Sudhir	Darien, IL	68	888
# of filed Patents : 68 Total Citations : 888

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Patent Citation Ranking

• 11 Citation Count
• G01D Class

• 63.31 % this patent is cited more than
• 18 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
May 15, 2007	US,7216558,B2   US7216558B2	GRANTED PATENT AS SECOND PUBLICATION
April 07, 2005	US,20050072252,A1   US20050072252A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8388318

Hermetic crankcase heater

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Abstract

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A heater is provided inside a hermetic compressor to heat the fluid in an oil sump of the compressor. The heater can be substantially submerged in the fluid even at low fluid levels. The heater can raise the temperature of the fluid to a predetermined temperature to substantially maintain non-lubricant fluids in a gaseous state and prevent non-lubricant fluids from mixing with the lubricant in the sump. A feed through assembly in the compressor housing is used to supply power to both the compressor motor and the heater.

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Description

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Claims

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Claims data not available

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Legal Events

 

• MAFP2021
• PD2018
• I2018
• STCF2017
• P2017
• F2016
• AS2014

Date	Code	Event	Description
Jun 23, 2021	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4
Jan 10, 2018	PD	Priority Date
Jan 09, 2018	I	Issuance
Dec 20, 2017	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Mar 02, 2017	P	Published
Nov 11, 2016	F	Filing
Oct 14, 2014	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GOPALAN, KRISHNAN;SONNATHI, KALYAN CHAKRAVARTHY;JAIN, BHUVANESH N.;REEL/FRAME:040283/0680 Owner name: MICROSOFT CORPORATION, WASHINGTON Effective Date: Aug 27, 2007 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICROSOFT CORPORATION;REEL/FRAME:040283/0733 Owner name: MICROSOFT TECHNOLOGY LICENSING, LLC, WASHINGTON Effective Date: Oct 14, 2014