IP Library Granted Patent US 8,951,556
Granted Patent B2
US 8,951,556 · App. 13/786,110 · Granted Feb 10, 2015

Oral drug delivery system

Inventors: Su Il Yum (Los Altos, CA); Grant Schoenhard (San Carlos, CA); Arthur J. Tipton (Birmingham, AL); John W. Gibson (Springville, AL); John C. Middleton (Fort Collins, CO); Roger Fu (Saratoga, CA); Michael S. Zamloot (Austin, TX)
Assignee: Durect Corporation
A61K9/48A61K31/4458A61K9/4866A61K9/4858Y10S514/96A61K31/485A61K47/26
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Quick Facts
Patent No.
US 8,951,556
App. No.
13/786,110
Granted
Feb 10, 2015
Kind
B2
Abstract

Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.

Claims (36)

1. A composition comprising:

a drug comprising an opioid, a central nervous system (CNS) depressant, or a stimulant;

sucrose acetate isobutyrate (SAIB);

a cellulose acetate butyrate (CAB) having at least one feature selected from a butyryl content ranging from about 17% to about 38%, an acetyl content ranging from about 13% to about 30%, and a hydroxyl content ranging from about 0.8% to about 1.7%; and

a solvent.

2. The composition of claim 1 , wherein the drug is present in an amount ranging from about 2 mg to about 250 mg.

3. The composition of claim 1 , wherein the drug comprises hydrocodone, hydromorphone, morphine, oxymorphone, or oxycodone.

4. The composition of claim 1 , wherein the drug comprises a stimulant selected from dextroamphetamine and methylphenidate.

5. The composition of claim 1 , wherein the drug comprises methylphenidate.

6. The composition of claim 1 , wherein the composition comprises from about 20 weight percent to about 90 weight percent of the SAIB.

7. The composition of claim 1 , wherein the CAB has a butyryl content ranging from about 17% to about 38%.

8. The composition of claim 1 , wherein the CAB has an acetyl content ranging from about 13% to about 30%.

9. The composition of claim 1 , wherein the CAB has a butyryl content ranging from about 17% to about 38% and an acetyl content ranging from about 13% to about 30%.

10. The composition of claim 1 , wherein the composition comprises from about 1 weight percent to about 8.6 weight percent of the CAB.

11. The composition of claim 1 , wherein the composition comprises from about 20 weight percent to about 50 weight percent of the solvent.

12. The composition of claim 1 , wherein the solvent comprises propylene carbonate, N-methylpyrrolidone (NMP), glycofurol, alpha-tocopherol, diethyl phthalate, or polyethylene glycol 400 (PEG 400).

13. The composition of claim 1 , wherein the solvent comprises triacetin or ethyl lactate.

14. The composition of claim 1 , wherein the solvent comprises triacetin.

15. The composition of claim 1 , further comprising a member selected from caprylic/capric triglyceride, isopropyl myristate (IPM), ethyl oleate, dimethyl phthalate, and benzyl benzoate.

16. The composition of claim 1 , further comprising isopropyl myristate (IPM).

17. The composition of claim 16 , wherein the composition comprises from about 1 weight percent to about 75 weight percent of the IPM.

18. The composition of claim 16 , wherein the composition comprises:

from about 20 weight percent to about 90 weight percent of the SAIB;

from about 1 weight percent to about 8.6 weight percent of the CAB;

from about 1 weight percent to about 75 weight percent of the IPM; and

from about 20 weight percent to about 50 weight percent of the solvent.

19. The composition of claim 18 , wherein the composition comprises from 3 weight percent to 7.8 weight percent of the CAB.

20. The composition of claim 18 , wherein the composition comprises from 0.1 weight percent to 10 weight percent of the IPM.

21. The composition of claim 18 , wherein the composition comprises:

from about 30 weight percent to about 70 weight percent of the SAIB;

from about 1 weight percent to about 8.6 weight percent of the CAB;

from about 1 weight percent to about 75 weight percent of the IPM; and

from about 25 weight percent to about 48 weight percent of the solvent.

22. The composition of claim 1 , wherein the composition is contained in a capsule.

23. The composition of claim 22 , wherein the capsule comprises gelatin or hydroxyl propylmethyl cellulose.

24. The composition of claim 22 , wherein the capsule comprises a hard capsule comprising gelatin or hydroxyl propylmethyl cellulose.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 17, 2014
From: FU, ROGER; ZAMLOOT, MICHAEL S.
To: PAIN THERAPEUTICS, INC.
Reel/Frame 034531/0738 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 17, 2014
From: PAIN THERAPEUTICS, INC.
To: DURECT CORPORATION
Reel/Frame 034531/0762 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2013
From: YUM, SU IL; SCHOENHARD, GRANT; TIPTON, ARTHUR J.; GIBSON, JOHN W.; MIDDLETON, JOHN C.
To: DURECT CORPORATION
Reel/Frame 030689/0057 →
Continuity (5)
Continuation 13366168 · Feb 3, 2012
Continuation 10737144 · Dec 15, 2003
Provisional Application 60517464 · Nov 4, 2003
Provisional Application 60433116 · Dec 13, 2002
Related Publication 20130287845A1 · Oct 31, 2013