<PAGE>
===============================================================================
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
(Rule 13d-102)
INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Cumetrix Data Systems Corp.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock, without par value per share
- --------------------------------------------------------------------------------
(Title of Class of Securities)
230903 10 6
------------------------------
(CUSIP Number)
April 8, 1998
- --------------------------------------------------------------------------------
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[_] Rule 13d-1(b)
[_] Rule 13d-1(c)
[_] Rule 13d-1(d)
/1/The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB control number.
SEC 1745 (3-98)
<PAGE>
===============================================================================
CUSIP NO. 230903 10 6 13G Page 1 of 4 Pages
----------- --- ---
- ------------------------------------------------------------------------------
NAMES OF REPORTING PERSONS.
1 I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
(1) James Ung
(2) Mei Yang
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States of America
(1) James Ung -- Malaysia
(2) Mei Yang -- Malaysia
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
2,257,102
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
2,257,102
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
2,257,102
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
30.02%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
<PAGE>
Item 1(a). Name of Issuer:
Cumetrix Data Systems Corp.
Item 1(b). Address of Issuer's Principal Executive Offices:
957 Lawson Street
Industry, California 91748
Item 2(a). Name of Person Filing:
(1) James Ung
(2) Mei Yang
Item 2(b). Address of Principal Business Office or, if none, Residence:
(1) James Ung
President
Cumetrix Data Systems Corp.
957 Lawson Street
Industry, California 91748
(2) Mei Yang
Treasurer
Cumetrix Data Systems Corp.
957 Lawson Street
Industry, California 91748
Item 2(c). Citizenship:
(1) James Ung -- Malaysia
(2) Mei Yang -- Malaysia
Item 2(d). Title of Class of Securities:
Common Stock, without par value per share
Item 2(e). CUSIP Number:
230903 10 6
Item 3. Type of Reporting Person:
Not Applicable
(a) [ ] Broker or Dealer registered under Section 15 of the Act,
(b) [ ] Bank as defined in Section 3(a)(6) of the Act,
(c) [ ] Insurance Company as defined in Section 3(a)(19) of the
Act,
<PAGE>
(d) [ ] Investment Company registered under Section 8 of the
Investment Company Act,
(e) [ ] Investment Adviser Registered under Section 203 of the
Investment Advisers Act of 1940,
(f) [ ] Employee Benefit Plan, Pension Fund which is subject to the
provisions of the Employee Retirement Income Security Act
of 1974 or Endowment Fund See 13d-1(b)(1)(ii)(f),
(g) [ ] Parent Holding Company, in accordance with Rule 13d -
1(b)(ii)(g) (Note: See Item 7),
(h) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(h).
Item 4. Ownership.
Included in rows 5 through 9 and 11 on page 2.
Item 5. Ownership of Five Percent or Less of a Class.
Not Applicable
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Not Applicable
Item 7. Identification and Classification of the Subsidiary Which Acquired the
Security Being Reported on by the Parent Holding Company.
Not Applicable
Item 8. Identification and Classification of Members of the Group.
Not Applicable
Item 9. Notice of Dissolution of Group.
Not Applicable
Item 10. Certification.
Not Applicable
<PAGE>
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
JAMES UNG
February 15, 1999
--------------------------------------------
(Date)
/s/ JAMES UNG
--------------------------------------------
(Signature)
James Ung
--------------------------------------------
(Name)
MEI YANG
February 15, 1999
--------------------------------------------
(Date)
/s/ MEI YANG
--------------------------------------------
(Signature)
Mei Yang
--------------------------------------------
(Name)