Covered Property (1)

Related Assignments (9)

Other recorded transfers of the patent in this record — the chain of ownership.

Security Agreement May 24, 2007

From: DT-HP TEXAS OPERATING CORPORATION; DT-HP PATENTS AND TECHNOLOGIES CORPORATION

To: AMEGY BANK NATIONAL ASSOCIATION

Reel/Frame 019331/0756 →

Assignment of Assignor's Interest Jun 11, 2007

From: DRILLTEC PATENTS & TECHNOLOGIES COMPANY, INC., A DELAWARE CORPORATION; DRILLTEC TECHNOLOGIES, L.P., A DELAWARE LIMITED PARTNERSHIP

To: DT-HP PATENTS AND TECHNOLOGIES CORPORATION, A DELAWARE CORPORATION

Reel/Frame 019407/0123 →

Change of Name Dec 13, 2007

From: DT-HP PATENTS AND TECHNOLOGIES CORPORATION

To: DRILLTEC PATENTS & TECHNOLOGIES CORPORATION

Reel/Frame 020243/0443 →

Release of Security Interest Mar 12, 2012

From: ALLIED CAPITAL CORPORATION

To: DRILLTEC PATENT AND TECHNOLOGIES CORPORATION

Reel/Frame 027844/0584 →

Release of Security Interest Mar 14, 2012

From: ORCHARD FIRST SOURCE CAPITAL, INC. (F/K/A FIRST SOURCE FINANCIAL INC.)

To: DRILLTEC PATENT AND TECHNOLOGIES COMPANY, INC.

Reel/Frame 027865/0520 →

Release of Security Interest Mar 14, 2012

From: EQUUS II INCORPORATED

To: DRILLTEC PATENT AND TECHNOLOGIES COMPANY, INC.

Reel/Frame 027865/0537 →

Release of Security Interest Mar 15, 2012

From: ORCHARD FIRST CAPITAL, INC. (F/K/A/ FIRST SOURCE FINANCIAL INC.)

To: DRILLTEC PATENT AND TECHNOLOGIES COMPANY, INC.

Reel/Frame 027873/0599 →

Release of Security Interest Mar 20, 2012

From: AMEGY BANK NATIONAL ASSOCIATION

To: DRILLTEC PATENT AND TECHNOLOGIES COMPANY, INC. (FKA DT-HP TEXAS OPERATING CORP. AND DT-HP PATENTS AND TECHNOLOGIES CORP.)

Reel/Frame 027897/0579 →

Security Agreement Jul 13, 2012

From: DRILLTEC PATENTS & TECHNOLOGIES CORPORATION

To: COMERICA BANK, A TEXAS BANKING ASSOCIATION

Reel/Frame 028550/0321 →