| Title: | Point-of-use ammonia purification for electronic component manufacture | ||
| Application Number: | 95197886 | Application Date: | 1995.06.05 |
| Publication Number: | 1186479 | Publication Date: | 1998.07.01 |
| Approval Pub. Date: | Granted Pub. Date: | 2002.03.13 | |
| International Classifi-cation: | C01C1/02,H01L21/00 | ||
| Applicant(s) Name: | Startec Ventures, Inc. | Address: | |
| Inventor(s) Name: | J. G. Hoffman | ||
| Attorney & Agent: | sun ai | ||
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Abstract: |
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| Highly purified ammonia for use in processes for the production of high-precision electronic components is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor via a filter to filter out particles of less than 0.005 micron in size, and scrubbing the filtered vapor in a high-pH aqueous liquid-vapor contact unit. | |||
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| Time: | 6 | ||
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