<SEQUENCE>1


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25


                           NOTIFICATION OF LATE FILING

(Check One):   [ ] Form 10-K and Form 10-KSB   [ ] Form 11-K   [ ] Form 20-F
               |X| Form 10-Q and Form 10-QSB   [ ] Form 10-D   [ ] Form N-SAR

For Period Ended: March 31, 2008

               [ ] Transition Report on Form 10-K and Form 10-KSB
               [ ] Transition Report on Form 10-Q and Form 10-QSB
               [ ] Transition Report on Form 20-F
               [ ] Transition Report on Form 11-K
               [ ] Transition Report on Form N-SAR

               For the Transition Period Ended:

            Nothing in this form shall be construed to imply that the
            Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify
the item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

Regent Technologies, Inc.
- --------------------------------------------------------------------------------
Full Name of Registrant

Regent Petroleum Corporation
- --------------------------------------------------------------------------------
Former Name if Applicable

5646 Milton, Suite 722
- --------------------------------------------------------------------------------
Address of Principal Executive Office (Street and Number)

Dallas, Texas 75206
- --------------------------------------------------------------------------------
City, State and Zip Code



PART II -- RULE 12B-25 (B) AND (C)

      If the subject report could not be filed without unreasonable  effort  or
expense  and  the  registrant  seeks  relief  pursuant  to  Rule 12b-25(b), the
following should be completed. (Check box if appropriate.)

|X|   (a)  The reasons described in reasonable detail in Part  III of this form
      could not be eliminated without unreasonable effort or expense.

|X|   (b)   The subject annual report, semi-annual report, transition report on
      Form  10-K,  Form 20-F, Form 11-K, Form N-SAR or Form N-CSR,  or  portion
      thereof, will  be filed on or before the fifteenth calendar day following
      the prescribed due  date;  or  the subject quarterly report or transition
      report  on Form 10-Q or subject distribution  report  on  Form  10-D,  or
      portion thereof,  will  be  filed  on  or  before  the fifth calendar day
      following the prescribed due date; and

      (c)   The accountant's statement or other exhibit required  by  Rule 12b-
      25(c) has been attached if applicable.

PART III -- NARRATIVE

State  below in reasonable detail the reasons why Form 10-K, 11-K, 20-F,  10-Q,
N-SAR or  the  transition  report portion thereof could not be filed within the
prescribed time period.

The Company's Quarterly Report on Form 10-Q for the  quarter  ended  March  31,
2009 cannot be filed within  the  prescribed  time  period  because the Company
needs  additional time to review certain transactions with its  accountants  to
insure adequate and proper disclosure of information required to be included in
the Form 10-Q.  The Company's Quarterly Report on Form 10-Q will be filed on or
before the 5th calendar day following the prescribed due date.

PART IV -- OTHER INFORMATION

(1) Name and telephone number of person to contact in regard to this
notification

                 David A. Nelson            (214)                507-9507
         -----------------------------------------------------------------------
                     (Name)              (Area Code)        (Telephone Number)

(2)   Have all other periodic reports required under Section 13 or 15(d) of the
Securities Exchange Act of 1934 or Section 30 of the Investment Company  Act of
1940  during  the  preceding  12  months  or  for  such shorter period that the
registrant was required to file such report(s) been  filed?   If  the answer is
no, identify report(s).

                                                         |X|  Yes   |_|  No

(3)    Is  it  anticipated that any significant change in results of operations
from the corresponding period for the last fiscal year will be reflected by the
earnings statements to be included in the subject report or portion thereof?

                                                         |_|  Yes   |X|  No

If so, attach an  explanation  of  the anticipated change, both narratively and
quantitatively, and, if appropriate, state the reason why a reasonable estimate
of the results cannot be made.


                           Regent Technologies, Inc.
                 --------------------------------------------
                 (Name of Registrant as specified in Charter)

has caused this notification to be signed  on  its  behalf  by  the undersigned
thereunto duly authorized.



Date: May 14, 2009                By: /s/ David A. Nelson
      ---------------                    ---------------------------------------
                                          David A. Nelson, President