6 Del. C. § 9-309: Security interest perfected upon attachment.

The following security interests are perfected when they attach:

(1) a purchase-money security interest in consumer goods, except as otherwise provided in Section 9-311(b) with respect to consumer goods that are subject to a statute or treaty described in Section 9-311(a);

(2) an assignment of accounts or payment intangibles which does not by itself or in conjunction with other assignments to the same assignee transfer a significant part of the assignor’s outstanding accounts or payment intangibles;

(3) a sale of a payment intangible;

(4) a sale of a promissory note;

(5) a security interest created by the assignment of a health-care-insurance receivable to the provider of the health-care goods or services;

(6) a security interest arising under Section 2-401, 2-505, 2-711(3), or 2A-508(5), until the debtor obtains possession of the collateral;

(7) a security interest of a collecting bank arising under Section 4-210;

(8) a security interest of an issuer or nominated person arising under Section 5-118;

(9) a security interest arising in the delivery of a financial asset under Section 9-206(c);

(10) a security interest in investment property created by a broker or securities intermediary;

(11) a security interest in a commodity contract or a commodity account created by a commodity intermediary;

(12) an assignment for the benefit of all creditors of the transferor and subsequent transfers by the assignee thereunder; and

(13) a security interest created by an assignment of a beneficial interest in a decedent’s estate.