Del. Code Ann. tit. 6, § 9-209 – Duties of secured party if account debtor has been notified of assignment

(a) Applicability of section. — Except as otherwise provided in subsection (c), this section applies if:
1. (1) there is no outstanding secured obligation; and
2. (2) the secured party is not committed to make advances, incur obligations, or otherwise give value.
(b) Duties of secured party after receiving demand from debtor. — Within 10 days after receiving a signed demand by the debtor, a secured party shall send to an account debtor that has received notification under Section 9-406(a) or 12-106(b) of an assignment to the secured party as assignee under a signed record that releases the account debtor from any further obligation to the secured party.
(c) Inapplicability to sales. — This section does not apply to an assignment constituting the sale of an account, chattel paper, or payment intangible.