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Patent Assignment Assignor Details
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Assignor Name : ILLFELDER, HERBERT M.J.
Total Assignments: 4
Assignment: 1
Reel/Frame:019674/0300   Pages: 3
Recorded: 08/09/2007
Attorney Dkt #:PAT057US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MCELHINNEY, GRAHAM A
Exec Dt:
05/02/2007
2
ILLFELDER, HERBERT M.J.
Exec Dt:
04/20/2007
Assignee
1
PATHFINDER ENERGY SERVICES, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7617049
US20080177475
11799906
Correspondence name and address
MATTHEW STEINHEIDER
15151 SOMMERMEYER
HOUSTON, TX 77041
Assignment: 2
Reel/Frame:021231/0955   Pages: 2
Recorded: 07/14/2008
Attorney Dkt #:PAT065US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ILLFELDER, HERBERT M.J.
Exec Dt:
05/01/2008
Assignee
1
PATHFINDER ENERGY SERVICES, INC.
15151 SOMMERMEYER ST.
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8010290
US20080275648
12150997
Correspondence name and address
MATTHEW STEINHEIDER
15151 SOMMERMEYER ST.
PATHFINDER ENERGY SERVICES, INC.
HOUSTON, TX 77041
Assignment: 3
Reel/Frame:024117/0633   Pages: 5
Recorded: 03/22/2010
Attorney Dkt #:09-PAT52(1)
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MCELHINNEY, GRAHAM A.
Exec Dt:
03/16/2010
2
ILLFELDER, HERBERT M.J.
Exec Dt:
03/09/2010
Assignee
1
SMITH INTERNATIONAL, INC.
1310 RANKIN RD.
HOUSTON, TEXAS 77073
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100241410
12725578
Correspondence name and address
SMITH INTERNATIONAL, INC.
1310 RANKIN RD.
PATENT SERVICES
HOUSTON, TX 77073
Assignment: 4
Reel/Frame:046171/0505   Pages: 9
Recorded: 06/22/2018
Attorney Dkt #:IS13.4443-US-PCT
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BROOKS, ANDREW G.
Exec Dt:
06/06/2016
2
DEPAVIA, LUIS E.
Exec Dt:
06/21/2018
3
ILLFELDER, HERBERT M.J.
Exec Dt:
06/06/2017
4
EGNER, JACOB
Exec Dt:
09/12/2016
Assignee
1
SCHLUMBERGER TECHNOLOGY CORPORATION
300 SCHLUMBERGER DRIVE
SUGAR LAND, TEXAS 77478
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20170362927
15533054
Correspondence name and address
KRISTINE DUMAS-SCARBER
10001 RICHMOND AVENUE
ROOM 4720
HOUSTON, TX 77042

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