Number | Date | Country | Kind |
---|---|---|---|
1-298443 | Nov 1989 | JPX |
This is a division of application Ser. No. 07/612,475, filed on Nov. 14, 1990, now U.S. Pat. No. 5,266,289.
Number | Name | Date | Kind |
---|---|---|---|
1859998 | Svendsen | May 1932 | |
1959749 | Svendsen | May 1934 | |
4981664 | Chieng et al. | Jan 1991 | |
5028407 | Chieng et al. | Jul 1991 | |
5064473 | Kubo et al. | Nov 1991 | |
5230953 | Tsugeno et al. | Jul 1993 | |
5266289 | Tsugeno et al. | Nov 1993 |
Number | Date | Country |
---|---|---|
0326707 | Aug 1989 | EPX |
0337712 | Oct 1989 | EPX |
62-153111 | Jul 1987 | JPX |
Entry |
---|
Kirk-Othmer, vol. 10, 3rd. edition, 1980, p. 677, "Encyclopedia of Chemical Technology". |
Chemical Abstracts, vol. 95, No. 18, Nov. 2, 1981, AN-157174u, Hanafi, et al., "Effect of Fluorination on the Surface Texture of Silica Gel". |
Chemical Abstracts, vol. 72, No. 6, Feb. 9, 1970, AN-27935g, Bratishko, et al., "Reaction of Silicon Dioxide with Ammonium Biflouroide". |
Chemical Abstracts, vol. 102, No. 20, May 20, 1985, AN-169148q, SU-1130526, Dec. 23, 1984. |
Number | Date | Country | |
---|---|---|---|
Parent | 612475 | Nov 1990 |