UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 1)


Ion Networks, Inc.

(Name of Issuer)

Common Stock,
(Title of Class of Securities)

46205P100
(CUSIP Number)
		with a copy to:
Austin W. Marxe		Allen B. Levithan, Esq.
153 East 53rd Street		Lowenstein Sandler PC
New York, New York  10022		65 Livingston Avenue
			Roseland, New Jersey  07068
			(973) 597-2424
(Name, Address and Telephone Number of Person 
Authorized to Receive Notices and Communications)

March 31, 2005*
(Date of Event which Requires Filing of this Statement)
* Amending percentages owned.

If the filing person has previously filed a statement on Schedule l3G to report 
the acquisition that is the subject of this Schedule 13D, and is filing this 
schedule because of section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check 
the following box. ?

Note:  Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits.  See section 240.13d-7 for
other parties to whom copies are to be sent.

*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 
disclosures provided in a prior cover page.

The information required on 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).




Cusip No.   46205P100      	
	1.	Names of Reporting Persons.  I.R.S. Identification Nos. of above 
persons (entities only):
	
	Austin W. Marxe and David M. Greenhouse

	
	2.	Check the Appropriate Box if a Member of a Group (See Instructions):
	(a)	[    ]	 	Not Applicable
	(b)	[    ]	
	
	3.	SEC Use Only
	
	4.	Source of Funds (See Instructions):  00
	
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to 
Items 2(d) or 2(e):
				Not Applicable
	
	6.	Citizenship or Place of Organization:	    United States
	
	Number of	7.	Sole Voting Power:	0*
	Shares Beneficially	8.	Shared Voting Power:      9,749,930*
	Owned by
	Each Reporting	9.	Sole Dispositive Power:	0*
	Person With	10.	Shared Dispositive Power:      9,749,930*
	
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person:   
9,749,930*
	
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares
		(See Instructions):		               Not Applicable
	
	13.	Percent of Class Represented by Amount in Row (11):    32.1% *
	
	14.	Type of Reporting Person (See Instructions):       IA, IN
	

*	This is a joint filing by Austin W. Marxe (?Marxe?) and David M. 
Greenhouse (?Greenhouse?).  Marxe and Greenhouse share sole voting and 
investment power over 1,198,747 shares of Common Stock and 604,324 
Warrants to purchase Common Stock owned by Special Situations Cayman Fund, 
L.P., 3,343,200 shares of Common Stock and 1,733,659 Warrants to purchase 
Common Stock owned by Special Situations Fund III, L.P., 1,281,653 shares 
of Common Stock and 666,476 Warrants to purchase Common Stock owned by 
Special Situations Private Equity Fund, L.P., 94,621 shares of Common 
Stock and 50,780 Warrants to purchase Common Stock owned by Special 
Situations Technology Fund, L.P. and 505,826 shares of common stock and 
270,644 Warrants to purchase Common Stock owned by Special Situations 
Technology Fund II, L.P.
  See Items 2 and 5of this Schedule 13D for additional information.


Item 1.	Security and Issuer.
	This schedule related to the common stock and warrants of Amerigon 
Incorporated (the ?Issuer?). The Issuer?s principal executive officers are 
located at 120 Corporate Blvd., S. Plainfield, NJ 07080

Item 2.	Identity and Background.
	The persons filing this report are Austin W. Marxe (?Marxe?) and 
David M. Greenhouse (?Greenhouse?), who are the controlling principals of AWM 
Investment Company, Inc. (?AWM?), the general partner of and investment adviser
to Special Situations Cayman Fund, L.P. (?Cayman?).  AWM also serves as the 
general partner of MGP Advisers Limited Partnership (?MGP?), the general partner
of and investment adviser to Special Situations Fund III, L.P. (?SSF3?).  Marxe
and Greenhouse are also members of MG Advisers L.L.C. (?MG?), the general 
partner of and investment adviser to Special Situations Private Equity Fund, 
L.P. (?SSPE?), and members of SST Advisers, L.L.C. (?SSTA?), the general
partner of and investment adviser to Special Situations Technology Fund, L.P. 
(?Technology?) and the Special Situations Technology Fund II, L.P. (?Tech II?)
(SSF3, Cayman, SSPE, Technology and Tech II will hereafter be referred to as, 
the ?Funds?).  

The principal office and business address of the Reporting Persons, is 153 East 
53rd Street, 55th Floor, New York NY 10022.

The principal business of each Fund is to invest in equity and equity-related 
securities and other securities of any kind or nature.

	Mr. Marxe and Mr. Greenhouse have never been convicted in any 
criminal proceeding (excluding traffic violations or similar misdemeanors), nor 
have either of them been a party to any civil proceeding commenced before a 
judicial or administrative body of competent jurisdiction as a result of which 
he was or is now subject to a judgment, decree or final order enjoining future 
violations of, or prohibiting or mandating activities subject to, federal or 
state securities laws or finding any violation with respect to such laws.  Mr. 
Marxe and Mr. Greenhouse are citizens of the United States.

Item 3.	Source and Amount of Funds or Other Consideration.
	Each Fund utilized its own available net assets to purchase the 
securities referred to in this Schedule.

Item 4.	Purpose of Transaction.

	The securities referred to in this Schedule have been acquired by 
each of the Funds for investment purposes and not with the purpose or effect of
changing or influencing control of the Issuer.  Each Fund acquired the 
securities in the ordinary course of business and is holding the securities for
the benefit of its investors.

Item 5.	Interest in Securities of the Issuer.

		Cayman owns 1,198,747 shares of Common Stock and 604,324 Warrants to 
purchase Common Stock or 6.5% of the shares outstanding, SSF3 owns 3,343,200 
shares of Common Stock and 1,733,659 Warrants to purchase Common Stock or 
17.6% of the shares outstanding, SSPE owns 1,281,653 shares of Common Stock 
and 666,476 warrants to purchase Common Stock or 7.0% of the outstanding 
shares, Technology owns 94,621 shares of Common Stock and 50,780 Warrants to 
purchase Common Stock or .5% of the shares outstanding, and Tech II owns 
505,826 shares of common stock and 270,644 Warrant to purchase Common Stock or 
2.8% of the outstanding shares.  Messrs. Marxe and Greenhouse share the power 
to vote and direct the disposition of all shares of Common Stock owned by each 
of the Funds. Messrs. Marxe and Greenhouse are deemed to beneficially own a 
total of 6,424,047 shares of Common Stock and 3,325,883 Warrants to purchase 
Common Stock or 32.1% of the outstanding shares.


		The following table reflects the acquisition of Common Stock and 
Warrants purchased in the March 2005 Private Placement. There were no other 
transactions during the sixty days preceding the date of the event that 
requires the filing of this statement:
A.  Special Situations Cayman Fund, L.P. 

Date
Quantity
Average Price

(Sales)

	
Date
Quantity
Average Price

(Purchases)

March 2005  Common Stock
817,647
$.17
             Warrants
408,824



B.  Special Situations Private Equity Fund, L.P. 

Date
Quantity
Average Price

(Sales)



Date

Quantity

Average Price

(Purchases)

March 2005  Common Stock
882,353
$.17
             Warrants
441,176



C.  Special Situations Technology Fund, L.P. 

Date
Quantity
Average Price

(Sales)

                   

Date

Quantity

Average Price

(Purchases)

March 2005  Common Stock
64,706
$.17
             Warrants
32,353


D  Special Situations Technology Fund II, L.P. 

Date
Quantity
Average Price

(Sales)

                   

Date

Quantity

Average Price

(Purchases)

March 2005  Common Stock
352,941
$.17
             Warrants
176,471

E.	Special Situations Fund III, L.P. 

Date
Quantity
Average Price

(Sales)

                   

Date

Quantity

Average Price

(Purchases)

March 2005  Common Stock
2,294,118
$.17
             Warrants
1,147,059


Item 6.	Contracts, Arrangements, Understandings or Relationships With 
Respect to Securities of the Issuer.

		No contracts, arrangements, understandings or similar relationships 
exist with respect to the securities of the Company between Messrs. Marxe and 
Greenhouse and any other individual or entity.  

Item 7.	Material to be Filed as Exhibits.

	Joint Filing Agreement.


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.


April 7, 2005



	/s/_Austin W. Marxe			
Austin W. Marxe



	/s/_David M. Greenhouse		
David M. Greenhouse






Attention:  Intentional misstatements or omissions of fact constitute Federal 
criminal violations (See 18 U.S.C. 1001).


JOINT FILING AGREEMENT


	Austin W. Marxe and David M. Greenhouse hereby agree that the Schedule 
13D to which this agreement is attached is filed on behalf of each of them.



	/s/_Austin W. Marxe			
Austin W. Marxe



	/s/_David M. Greenhouse		
David M. Greenhouse




 
 
 
 


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