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A transparent amorphous AlO(OH).(H2Oglass having transparency from 75 to 95% , preferably 85 to 95 % with or without doping with rare-earth or other metal cations and a process of preparing the same. The transparent amorphous AlO(OH). (H2Oglass having purity of 99.5 to 99.9%, preferably 99.9%. The process involves providing surface treated Al-metal having highly reactive nascent Al; hydrolysis of the surface treated Al-metal to provide AlO(OH). (H2O in gel form; heating in the temperature range of 75 to 95°C, preferably 80 to 90°C to a homogenous viscous mass followed by quenching .
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
19 May 2003
Publication Number
Publication Type
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2005-10-28
Renewal Date
Applicants
INDIAN INSTITUTE OF TECHNOLOGY
KHARAGPUR
Inventors
1. RAM, SHANKER
MATERIAL SCIENCE CENTRE, INDIAN INSTITUTE OF TECHNOLOGY, KHARAGPUR, PIN 721-302
2. MOHANTY,PARITOSH
MATERIAL SCIENCE CENTRE, INDIAN INSTITUTE OF TECHNOLOGY, KHARAGPUR, PIN 721-302
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 269-kol-2003-granted-specification.pdf | 2011-10-06 |
| 2 | 269-kol-2003-granted-reply to examination report.pdf | 2011-10-06 |
| 3 | 269-kol-2003-granted-pa.pdf | 2011-10-06 |
| 4 | 269-kol-2003-granted-letter patent.pdf | 2011-10-06 |
| 5 | 269-kol-2003-granted-form 3.pdf | 2011-10-06 |
| 6 | 269-kol-2003-granted-form 2.pdf | 2011-10-06 |
| 7 | 269-kol-2003-granted-form 18.pdf | 2011-10-06 |
| 8 | 269-kol-2003-granted-form 1.pdf | 2011-10-06 |
| 9 | 269-kol-2003-granted-examination report.pdf | 2011-10-06 |
| 10 | 269-kol-2003-granted-description (complete).pdf | 2011-10-06 |
| 11 | 269-kol-2003-granted-correspondence.pdf | 2011-10-06 |
| 12 | 269-kol-2003-granted-claims.pdf | 2011-10-06 |
| 13 | 269-kol-2003-granted-abstract.pdf | 2011-10-06 |
| 14 | 00269-kol-2003-pa.pdf | 2011-10-06 |
| 15 | 00269-kol-2003-form-3.pdf | 2011-10-06 |
| 16 | 00269-kol-2003-form-2.pdf | 2011-10-06 |
| 17 | 00269-kol-2003-form-18.pdf | 2011-10-06 |
| 18 | 00269-kol-2003-form-1.pdf | 2011-10-06 |
| 19 | 00269-kol-2003-description(complete).pdf | 2011-10-06 |
| 20 | 00269-kol-2003-correspondence.pdf | 2011-10-06 |
| 21 | 00269-kol-2003-claims.pdf | 2011-10-06 |
| 22 | 00269-kol-2003-abstract.pdf | 2011-10-06 |
| 23 | 269-KOL-2003-FORM-27.pdf | 2012-07-13 |