PREFORM FOR MANUFACTURING A MATERIAL HAVING A PLURALITY OF VOIDS AND METHOD OF MAKING THE SAME - Patent 1397567

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EP 1 397 567 A2

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(88)	Date of publication A3:
	27.02.2003

(43)	Date of publication:
	17.03.2004 Bulletin 2004/12

(21)	Application number: 02734479.5

(22)	Date of filing: 17.05.2002

(51)	International Patent Classification (IPC)⁷: E04C 2/34

(86)	International application number:
	PCT/US2002/015915

(87)	International publication number:
	WO 2002/092936 (21.11.2002 Gazette 2002/47)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

17.05.2001 US 291904 P
17.05.2001 US 860349

(71)	Applicant: OWENS, Charles R.
	Alexandria, VA 22304 (US)

(72)	Inventor:
	OWENS, Charles R. Alexandria, VA 22304 (US)

(74)	Representative: Berkenfeld, Helmut, Dipl.-Ing.
	An der Schanz 2 50735 Köln 50735 Köln (DE)

(54)	PREFORM FOR MANUFACTURING A MATERIAL HAVING A PLURALITY OF VOIDS AND METHOD OF MAKING THE SAME