Global Patent Index - EP 0946701 A4

EP 0946701 A4 2000-03-08 - CLEANING METHOD FOR POLYETHYLENE TEREPHTALATE CONTAINERS

Title (en)

CLEANING METHOD FOR POLYETHYLENE TEREPHTALATE CONTAINERS

Title (de)

REINIGUNGSVERFAHREN FÜR POLYETHLYEN-TEREPHTALAT-BEHÄLTER

Title (fr)

PROCEDE DE NETTOYAGE DE RESERVOIRS EN POLYETHYLENE TEREPHTHALATE

Publication

EP 0946701 A4 (EN)

Application

EP 96941351 A

Priority

US 9618261 W

Abstract (en)

[origin: WO9822566A1] A method for cleaning polyethylene terephthalate containers including contacting the PET container with an alkaline wash solution having a temperature ranging of less than about 60 DEG C is disclosed. The alkaline wash solution is formulated from a first concentrate, a second concentrate, an alkalinity source, and a balance of water. The first concentrate preferably has a first nonionic surfactant, a first builder, and acid in an amount effective to provide a phase stable solution. The second concentrate preferably has a second nonionic surfactant and a second builder. The first and second concentrate are present in the wash solution in a concentration ranging from about 0.3 wt.% to 2.0 wt.%. Preferably, the first nonionic surfactant has a cloud point ranging from about 5 DEG C to 60 DEG C.

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

C11D 3/20; B08B 3/10; B08B 9/08; C11D 1/24; C11D 3/33; C11D 3/34; C11D 3/36; C11D 3/60

IPC 8 full level (invention and additional information)

B08B 9/08 (2006.01); B08B 3/08 (2006.01); C11D 1/24 (2006.01); C11D 1/66 (2006.01); C11D 3/02 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/34 (2006.01); C11D 3/36 (2006.01); C11D 11/00 (2006.01); C11D 17/08 (2006.01)

CPC (invention and additional information)

C11D 3/042 (2013.01); C11D 1/24 (2013.01); C11D 1/66 (2013.01); C11D 3/044 (2013.01); C11D 3/2075 (2013.01); C11D 3/3418 (2013.01); C11D 3/361 (2013.01); C11D 11/0035 (2013.01); C11D 3/3409 (2013.01)

Citation (search report)

  • [E] WO 9719157 A1 19970529 - UNILEVER NV [NL], et al
  • [A] DATABASE WPI Section Ch Week 9510, Derwent Publications Ltd., London, GB; Class D25, AN 95-070581, XP002037099
  • See also references of WO 9822566A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9822566 A1 19980528; AU 1052197 A 19980610; AU 734264 B2 20010607; CA 2271819 A1 19980528; CA 2271819 C 20070130; DE 69632836 D1 20040805; DE 69632836 T2 20050721; EP 0946701 A1 19991006; EP 0946701 A4 20000308; EP 0946701 B1 20040630; JP 2001504535 A 20010403; JP 4163754 B2 20081008; TW 546379 B 20030811; ZA 9705113 B 19981210

INPADOC legal status


2016-11-15 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 69632836

2016-01-29 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20151110

- Year of fee payment: 20

2005-07-06 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20041115

2005-06-24 [EN] FR: TRANSLATION NOT FILED

2005-06-22 [26N] NO OPPOSITION FILED

- Effective date: 20050331

2005-01-03 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2004-11-15 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20041115

2004-08-05 [REF] CORRESPONDS TO:

- Document: DE 69632836 P 20040805

2004-06-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT NL

2004-06-30 [REG GB FG4D] EUROPEAN PATENT GRANTED

2004-06-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040630

2004-06-30 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040630

2004-06-30 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040630

2002-04-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020307

2000-03-08 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000124

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB IT NL

2000-03-08 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 11D 3/20 A, 7C 11D 3/33 B, 7C 11D 3/36 B, 7C 11D 3/60 B, 7B 08B 3/10 B, 7B 08B 9/08 B, 7C 11D 3/34 B, 7C 11D 1/24 B

1999-10-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990614

1999-10-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL