IP Library Assignment 003927/0757
Patent Assignment
Reel/Frame 003927/0757

Assignment of Assignors Interest.

Recorded: 1981-09-18 Pages: 2
Assignor
WARCHOL, JOSEPH F.
Executed: 1981-09-02
Assignee
E.F. HOUGHTON AND COMPANY, A CORP. OF PA.
VALLEY FORGE, PENNSYLVANIA
Covered Property (1)
Method of Quenching
Patent: 4,404,044 →
Application: 06/299,961 →
Related Assignments (4)
Other recorded transfers of the patent in this record — the chain of ownership.
Confirmatory Assignment Sep 6, 2001
From: E. F. HOUGHTON & CO.
To: HOUGHTON TECHNICAL, INC.
Reel/Frame 012134/0280 →
Corrective Assignment to Correct Assignee Name Recorded on Reel 012134 Frame 0280. Mar 6, 2002
From: E. F. HOUGHTON & CO.
To: HOUGHTON TECHNICAL CORP.
Reel/Frame 012983/0451 →
Security Interest Mar 19, 2002
From: HOUGHTON TECHNICAL CORP.
To: JOHN HANCOCK LIFE INSURANCE COMPANY, AS COLLATERAL AGENT
Reel/Frame 012762/0416 →
Grant of Security Interest Mar 10, 2008
From: EFHCO INC.
To: THE GOVERNOR AND COMPANY OF THE BANK OF IRELAND
Reel/Frame 020617/0494 →