Patent Assignment
Reel/Frame 023535/0639
Assignment of Assignor's Interest
Recorded: 2009-11-18
Pages: 6
Assignee
INDIAN INSTITUTE OF TECHNOLOGY DELHI
HAUZ KHAS, NEW DELHI, 110016, INDIA
Covered Property
(1)
Selective and Sensitive Detection of Mercuric Ion by Novel Dansyl-Appended Calix[4]Arene Molecules, via Fluorescence Quenching
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Jan 29, 2019
From: EMPIRE TECHNOLOGY DEVELOPMENT LLC
To: CRESTLINE DIRECT FINANCE, L.P.
Reel/Frame 048373/0217 →
Release of Security Interest
Jul 31, 2019
From: CRESTLINE DIRECT FINANCE, L.P.
To: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Reel/Frame 049924/0794 →
Release of Security Interest in Patents, Recorded on January 29, 2019 at Reel 048373 Frame 0217
Sep 22, 2025
From: CRESTLINE DIRECT FINANCE, L.P., AS COLLATERAL AGENT
To: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Reel/Frame 072936/0464 →
Release of Security Interest in Patents, Recorded on July 31, 2019 at Reel 049924 Frame 0794
Jun 22, 2026
From: CRESTLINE DIRECT FINANCE, L.P., AS COLLATERAL AGENT
To: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Reel/Frame 075798/0763 →