WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2004003331) NON-CORROSIVE AMPHOTERIC SURFACTANTS AND METHOD OF WELL TREATMENT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/003331    International Application No.:    PCT/US2003/020597
Publication Date: 08.01.2004 International Filing Date: 26.06.2003
Chapter 2 Demand Filed:    16.01.2004    
IPC:
C07B 61/00 (2006.01), C07C 205/00 (2006.01), C07C 227/02 (2006.01), C07C 229/00 (2006.01), C07C 229/06 (2006.01), C07C 229/12 (2006.01), C09K 3/00 (2006.01), E21B 1/00 (2006.01), E21B 43/00 (2006.01)
Applicants: DAVIS, Stephen, T. [US/US]; (US).
PANCHALINGAM, Varthilingam [US/US]; (US)
Inventors: DAVIS, Stephen, T.; (US).
PANCHALINGAM, Varthilingam; (US)
Agent: BUSHMAN, James, C.; Browning Bushman, Suite 1800, 5718 Westheimer, Houston, TX 77057 (US)
Priority Data:
60/391,563 26.06.2002 US
Title (EN) NON-CORROSIVE AMPHOTERIC SURFACTANTS AND METHOD OF WELL TREATMENT
(FR) TENSIOACTIFS AMPHOTERES NON CORROSIFS ET PROCEDE DE TRAITEMENT DE PUITS
Abstract: front page image
(EN)A chloride free amphoteric surfactant obtained by reacting an amine with a carbonyl compound, the amphoteric surfactant being particularly useful as a foamer for treating gas wells to enhance production.
(FR)Pour obtenir un tensioactif amphotère exempt de chlorure, on met à réagir un amine avec un composé carbonyle, le tensioactif amphotère étant particulièrement utile comme agent moussant pour traiter des puits de gaz afin d'accroître la production.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)