Patent Assignment
Reel/Frame 003849/0222
Assignment of Assignors Interest.
Recorded: 1981-03-30
Pages: 2
Assignee
E I. DU PONT DE NEMOURS AND COMPANY, A CORP. OF DEL.
WLMINGTON, DELAWARE, 19898
Covered Property
(1)
Method and Apparatus for Photometrically Monitoring the Concentrations of Both Chlorine and Chlorine Dioxide
Patent:
4,311,485 →
Application:
06/220,200 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 5, 1990
From: E. I. DU PONT DE NEMOURS AND COMPANY, A CORP. OF DE.
To: AMETEK, INC.
Reel/Frame 005381/0243 →
Assignment of Assignors Interest.
Jul 5, 1990
From: AMETEK, INC., A CORP. OF DE.
To: EMA CORP
Reel/Frame 005381/0248 →
Security Interest
Jul 25, 1994
From: EMA CORPORATION
To: CHASE MANHATTAN BANK, N.A., THE
Reel/Frame 007091/0269 →
Assignment of Assignor's Interest
Dec 11, 1995
From: CHASE MANHATTAN BANK, N.A.
To: EMA CORPORATION
Reel/Frame 007737/0223 →