Global patent index - EP 0976457 A1

EP 0976457 A1 2000-02-02 - Method for treating semiconductor material

Title (en)

Method for treating semiconductor material

Title (de)

Verfahren zum Behandeln von Halbleitermaterial

Title (fr)

Procédé de traitement de matériau semiconducteur

Publication

EP 0976457 A1 (DE)

Application

EP 99113591 A

Priority

DE 19834447 A

Abstract (en)

For the processing of semiconductor materials, such as for the prodn. of solar cells, the semiconductor rods (1) of polycrystalline silicon are in a liquid medium and are subjected to shock waves from an energy converter (4). The energy converter is at a gap of 1-100 cm from the semiconductor rods. The shock waves from an arc between electrodes (8), through an elastic membrane (7), have a pulse energy of 1-20 kJ and a pulse increase time of 1-5 mu s to the max. energy level. The energy converter is a semi-ellipsoid reflector. The working surfaces of the transport and positioning units are of plastics to prevent any soiling of the semiconductor materials. The inner surfaces of the chamber are coated with plastics, where the semiconductor materials are broken down.

IPC 1-7 (main, further and additional classification)

B02C 19/18

IPC 8 full level (invention and additional information)

B02C 19/00 (2006.01); B02C 19/18 (2006.01); B02C 23/36 (2006.01); B28D 5/00 (2006.01); C30B 29/06 (2006.01)

CPC (invention and additional information)

B28D 5/0005 (2013.01); B02C 19/18 (2013.01); B02C 2019/183 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

DE IT

EPO simple patent family

EP 0976457 A1 20000202; EP 0976457 B1 20001115; DE 19834447 A1 20000210; JP 2000079350 A 20000321; JP 3180910 B2 20010703; US 6360755 B1 20020326

INPADOC legal status

2005-07-08 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050708

2004-02-03 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20040203

2002-07-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Ref Legal Event Code: PGFP

- Payment date: 20020730

- Year of fee payment: 4

2001-11-07 [26N] NO OPPOSITION FILED

- Ref Legal Event Code: 26N

2001-04-13 [EN] FR: TRANSLATION NOT FILED

- Ref Legal Event Code: EN

2000-12-21 [REF] CORRESPONDS TO:

- Ref Legal Event Code: REF

- Ref Document Number: 59900015

- Country of Ref Document: DE

- Date of Ref Document: 2000-12-21

2000-11-16 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: JACOBACCI & PERANI S.P.A.

- Ref Legal Event Code: ITF

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE IT

2000-10-18 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: DE IT

2000-05-10 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000327

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990713

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE IT

2000-02-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI