This is a continuation of application Ser. No. 07/870,343, filed Apr. 17, 1992, now abandoned which is a division of application Ser. No. 07/498,638, filed Mar. 23, 1990, now U.S. Pat. No. 5,130,112.
Number | Name | Date | Kind |
---|---|---|---|
2017676 | Girsewald et al. | Oct 1935 | |
3350169 | Rinckhoff | Oct 1967 | |
3525586 | Drechsel et al. | Aug 1970 | |
3615197 | Jaeger | Oct 1971 | |
3647360 | Jaeger | Mar 1972 | |
3993429 | Archer | Nov 1976 | |
4008316 | Drechsel | Feb 1977 | |
4009250 | Novozhilov et al. | Feb 1977 | |
4029751 | Dorr et al. | Jun 1977 | |
4136153 | Robertson et al. | Jan 1979 | |
4333746 | Southam | Jun 1982 | |
4348373 | Schoubye | Sep 1982 | |
4368183 | Dorr et al. | Jan 1983 | |
4466815 | Southam | Aug 1984 | |
4478809 | McAlister et al. | Oct 1984 | |
4490347 | Gelblum | Dec 1984 | |
4533537 | Dittmar et al. | Aug 1985 | |
4576813 | McAlister et al. | Mar 1986 | |
4590047 | Donnell | May 1986 | |
4670242 | McAlister et al. | Jun 1987 | |
4842835 | Dorr et al. | Jun 1989 | |
4996038 | McAlister et al. | Feb 1991 | |
5118490 | McAlister | Jun 1992 | |
5130112 | McAlister et al. | Jul 1992 |
Number | Date | Country |
---|---|---|
993412 | May 1965 | GBX |
Entry |
---|
Olsen, John C. Unit Processes and Principles of Chemical Engineering, D. Van Nostrand Co. Inc. N.Y., N.Y 1932 pp. 1-3. |
Backhaus et al., Making the Most of Sulphuric Acid, Proceedings of the British Sulphur Corp. 5th Intern. Conf, pp. 460-470, Nov. 1981. |
McAlister et al., Chemical Engineering Progress, Jul. 1986 pp. 34-48. |
John C. Olsen, "Unit Processes of Chemical Engineering"; 1932; p. 103. |
Timothy L. Gall, et al., "Metals Handbook, Desk Edition"; 1985; p. 15.2. |
P. Shoubve, "Sulfuric Acid Production from Lean H2S containing Gases"; Jul./Aug., 1978; pp. 38-42; Sulphur No. 137. |
Unknown; "HRS Fronts Monsanto's Latest Push In Sulfuric Acid Technology"; Mar./Apr. 1987; Sulphur. |
D. R. McAlister et al.; "Economically Recovering Sulfuric Acid Heat"; Jul. 1986; pp. 34-38; Chemical Engineering Progress. |
Backhaus et al.; "Making the Most of Sulfuric Acid"; Proceedings of the British Sulphur Corp.-5th International Conference; pp. 460-470; Nov., 1981. |
Number | Date | Country | |
---|---|---|---|
Parent | 498638 | Mar 1990 |
Number | Date | Country | |
---|---|---|---|
Parent | 870343 | Apr 1992 |