Method of creating pores in a thin sheet of polyimide

Details Method of creating pores in a thin sheet of polyimide Method of creating pores in a thin sheet of polyimide

2005-05-18

2008-09-02

Goudreau, George A. (Department: 1792)

Etching a substrate: processes

Etching to produce porous or perforated article

C216S057000, C216S087000, C216S094000, C264S413000

Reexamination Certificate

active

07419612

ABSTRACT:
The invention concerns a method which consists in first subjecting the polyimide sheet to ionic bombardment, followed by an irradiation in the visible domain and finally a relatively brief chemical etching. Said method enables a thin polyimide sheet comprising pores, of nanometric to micrometric size, having a substantially cylindrical shape and substantially equal diameters to be obtained.

REFERENCES:
patent: 3303085 (1967-02-01), Price et al.
patent: 3415993 (1968-12-01), Fleischer et al.
patent: 3493751 (1970-02-01), Davies et al.
patent: 3612871 (1971-10-01), Crawford et al.
patent: 3662178 (1972-05-01), Caputi et al.
patent: 3677844 (1972-07-01), Fleischer et al.
patent: 3713921 (1973-01-01), Fleischer et al.
patent: 3742182 (1973-06-01), Saunders
patent: 3770532 (1973-11-01), Bean et al.
patent: 3802972 (1974-04-01), Fleischer et al.
patent: 3852134 (1974-12-01), Bean
patent: 4115303 (1978-09-01), Marchand et al.
patent: 4652412 (1987-03-01), Chiulli
patent: 4832997 (1989-05-01), Balanzat et al.
patent: 4855049 (1989-08-01), Toulemonde et al.
patent: 4872888 (1989-10-01), Ehrfeld et al.
patent: 4923608 (1990-05-01), Flottman et al.
patent: 4956219 (1990-09-01), Legras et al.
patent: 5234538 (1993-08-01), Lück
patent: 6861006 (2005-03-01), Ferain et al.
patent: 2003/0020024 (2003-01-01), Ferain et al.
patent: 3816078 (1989-11-01), None
patent: 43 19 610 (1994-05-01), None
patent: 0109147 (1984-05-01), None
patent: 1375204 (1974-04-01), None
patent: WO 87/05850 (1987-10-01), None
patent: WO 98/30317 (1998-07-01), None
patent: 2001/49403 (2001-07-01), None
patent: 2002/49402 (2001-07-01), None
“Pore geometry of etched ion tracks in polymide”; Trautmann et. al.; Nuclear Instruments & Methods In Physics Research, Section B: Bean Interactions with Materials and Atoms (Apr. 1996'), vol. B111, No. 1-2, pp. 70-74.
“Sodium hypochlorite as a developer for heavy ion tracks in polymide”; Klintberg et. al.; Nuclear Instruments & Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms (2001'), 184 (4), pp. 536-543.
“Bulk-etching behavior of Kapton and Thermalimide track detectors”; Chakarvarti et.al.; Nuclear Tracks and Radiation Measurements (1992'), 20(4), abstract only.
A.I. Vilensky et al., “Polyimide Track Membranes for Ultrafiltration and Microfiltration,” Polymer Science, vol. 36, No. 3, pp. 391-400 (1994).
L. Klintberg et al, “Sodium hypochlorite as a developer for heavy ion tracks in polyimide,” Nuclear Instruments and Methods in Physics Research B, vol. 184, pp. 536-543 (2001).
P.Yu. Apel et al., “Morphology of latent and etched heavy ion tracks in radiation resistant polymers polyimide and poly(ethylene naphthalate),” Nuclear Instruments and Methods in Physicas Research B, vol. 185, pp. 216-221 (2001).
PCT/EP 03/12780, PCT International Search Report, Mar. 3, 2004.
S.K. Chakarvarti et al., “Bulk-Etching Bevahiour of Kapton and Thermalimide Track Detectors,” Nucl. Tracks Radiat. Meas., vol. 20, No. 4, pp. 589-594 (1992).

Affiliated with

Also associated with

Rating

Method of creating pores in a thin sheet of polyimide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of creating pores in a thin sheet of polyimide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of creating pores in a thin sheet of polyimide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3967026