Method of producing nanostructures in membrances, and asymmetrical membrane
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 21, 2005
Grant Date -
Aug 28, 2003
app pub date -
Feb 26, 2002
filing date -
Feb 26, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a method of producing nanostructures in membranes, in which method a membrane consisting of a polymer material is irradiated with charged particles, especially ions, to produce particle tracks. The particle tracks in the membrane are etched using an etching liquid and the etching operation is stopped using a stop liquid, in such a manner that asymmetrical structures are formed. Polyimide is used as the membrane material.
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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GESELLSCHAFT FUER SCHWERIONENFORSCHUNG MBH | DARMSTADT |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Dobrev, Dobri D | Darmstadt, DE | 1 | 26 |
# of filed Patents : 1 Total Citations : 26 | |||
Neumann, Reinhard | Darmstadt, DE | 12 | 65 |
# of filed Patents : 12 Total Citations : 65 | |||
Siwy, Zuzanna | Darmstadt, DE | 5 | 45 |
# of filed Patents : 5 Total Citations : 45 | |||
Trautmann, Christina | Darmstadt, DE | 6 | 51 |
# of filed Patents : 6 Total Citations : 51 | |||
Voss, Kai | Darmstadt, DE | 1 | 26 |
# of filed Patents : 1 Total Citations : 26 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Legal Events
Date | Code | Event | Description |
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Feb 25, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Feb 23, 2017 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Sep 03, 2013 | I | Issuance | |
Aug 14, 2013 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jun 09, 2013 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GREENFELD, ISRAEL;YAVIN, ZVI;UHL, BERND;SIGNING DATES FROM 20030331 TO 20030508;REEL/FRAME:030573/0502 Owner name: RAFAEL ARMAMENT DEVELOPMENT AUTHORITY LTD., ISRAEL |
Sep 04, 2008 | P | Published | |
Oct 29, 2007 | F | Filing | |
Jan 23, 2004 | PD | Priority Date |

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