PATENTS
  1. Patent 586194 (USSR). Int. Class C 10 M 1/48, C 10 G 25/00, Purification method of anti-sludge motor oils additive. A. Grichenko, A. Yelshin, V. Vialcin, et al. Priority: 26.03.76, Published (1977), Bulletin No. 48.

  2. Patent 619200 (USSR). Int. Class G 01 D 37/04, Devices for automatic determination of filtration time. A. Grichenko, A. Yelshin, V. Kajarsky, et. al. Priority: 16.04.76, Published (1978), Bulletin. No. 30.

  3. Patent 719667 (USSR). Int. Class B 01 D 35/00, Vacuum filtration device. A. Grichenko, A. Yelshin. Priority: 07.07.78, Published (1980), Bulletin No. 9.

  4. Patent 797728 (USSR). Int. Class B 01 D 37/04, Devices for automatic determination of filtration time. A. Grichenko, A. Yelshin, A. Rudkovsky, et al. Priority: 04.04.79, Published (1981), Bulletin No. 3.

  5. Patent 875780 (USSR). Int. Class C 07 C 57/03, C 07 C 51/573, Intermediate product purification method for motor oil antisludge additive production. A. Grichenko, A. Yelshin, A. Rudkovsky et al. Priority: 25.07.79, Published 22.06.81.

  6. Patent 1074569 (USSR). Int. Class B 01 D 37/04, Automatic method of filtration control. A. Grichenko, A. Yelshin, V. Kafarov et al. Priority: 25.12.81, Published (1984), Bulletin No. 7.

  7. Patent 1127616 (USSR). Int. Class B 01 D 37/04, Devices for automatic determination of filtration time. A. Yelshin, A. Grichenko, et al. Priority: 15.06.83, Published (1984), Bulletin No. 45.

  8. Patent 1272674 (USSR). Int. Class C 07 C 139/06, C 07 B 24/16, Plasticizer production method for concrete mixtures. L. Kolmikov, V. Teteruk, A. Yelshin, et al. Priority: 29.04.84, Published 22.07.86.

  9. Patent 1187433 (USSR). Int. Class C 07 C 307/60, Method of intermediate product manufacturing for motor oil antisludge additive production. S. Pokrovskay, J. Oleyarsh, A. Yelshin, et al. Priority: 07.12.83, Published 22.06.85.

  10. Patent 1195600 (USSR). Int. Class C 07 C 57/13, 51/573, Process of purification of intermediate product for motor oil anti-sludge additive production. A. Yelshin, A. Grichenko, S. Jakubovsky. Priority: 29.03.84, Publides 01.08.85.

  11. Patent 1206274 (USSR). Int. Class C 07 C 139/06, C 11 D 3/34, Detergent production method. A. Yelshin, S. Putincev, S. Pokrovskay and V. Saskovec. Priority: 15.05.84, Published (1986), Bulletin No. 3.

  12. Patent 1212036 (USSR). Int. Class C 12 N 1/2, Method of yeast separation from cultural liquid. A. Yelshin, A. Grichenko, B. Zuev, et al. Priority: 29.03.84, Published 15.10.85

  13. Patent 1223962 (USSR). Int. Class B 01 D 29/38, Vacuum filter-thickener. A. Yelshin. Priority: 23.11.84, Published (1986), Bulletin No. 14.

  14. Patent 1295740 (USSR). Int. Class C 12 N 1/102 and 1/26, Method of microorganizms biomass separation. A. Yelshin, S. Putincev, A. Grichenko, et al. Priority: 24.02.84, Published 08.11.86.

  15. Patent 1277988 (USSR). Int. Class B 01 D 3/42, Distillation device. A. Yelshin. Priority: 21.06.85, Published (1986), Bulletin No. 47.

  16. Patent 1291182 (USSR). Int. Class B 01 D 29/04, Cross-flow filter. A. Yelshin. Priority: 19.11.85, Published (1987), Bulletin No. 7.

  17. Patent 1331537 (USSR). Int. Class 19. 11.85, Druk-filter. A. Yelshin. Priority: 18.03.86, Published (1987), Bulletin No. 31.

  18. Patent 1378893 (USSR). Int. Class B 01 D 39/08, Knitted filtering material for slurry. V. Petrova, M. Kogan and A. Yelshin. Priority: 04.06.83, Published (1988), Bulletin No. 9.

  19. Patent 1421734 (USSR). Int. Class C 07 C 139/06, C 11 D 3/34, Method of production of additive for stabilisation dispersions solids-water or oil in water emulsions. V. Saskovec, A. Yelshin, et al. Priority: 08.12.86, Published (1988), Bulletin No. 33.

  20. Patent 1461519 (USSR). Int. Class 08.12.86, Flotation device. A. Pankov, A. Yelshin and B. Zuev. Priority: 18.05.87, Published (1989), Bulletin No. 8.

  21. Patent 1445751 (USSR). Int. Class B 01 D 19/02, Filtering foam destruction device. A. Pankov, A. Yelshin. Priority: 16.06.87, Published (1988), Bulletin No. 47.

  22. Patent 1465421 (USSR). Int. Class C 02 F 1/48, Magnetic filter. A. Yelshin, A. Linkevich and A. Mitinov. Priority: 21.07.87, Published (1989), Bulletin No. 10.

  23. Patent 1482912 (USSR). Int. Class C 07 C 139/06, C 11 D 3/34, Method of production of additive for stabilisation dispersions solids-water or oil in water emulsions. V. Saskovec, N. Uriev, A. Yelshin, et al. Priority: 18.05.87, Published (1989), Bulletin No. 20.

  24. Patent 1503864 (USSR). Int. Class B 01 39/12, Filter element. P. Galushkov, A. Yelshin. Priority: 17.11.87, Published (1989), Bulletin No. 32.

  25. Patent 1503863 (USSR). Int. Class B 01 D 3/32, Knitted filtering material for slurry. V. Petrova, M. Kogan, A. Yelshin et al. Priority: 10.11.87, Published (1989), Bulletin No. 32.

  26. Patent 1606139 (USSR). Int. Class B 01 D 3/32, Mass-transfer apparatus. A. Pankov, A. Yelshin, I. Sichev. Priority: 25.11.88, Published (1990), Bulletin No. 42.

  27. Patent 1570746 (USSR). Int. Class B 01 D 39/10, Method of filtering element manufacturing. P. Galushkov and A. Yelshin. Priority: 18.01.88, Published (1990), Bulletin No. 22.

  28. Patent 1562010 (USSR). Int. Class B 01 D 39/00, Method manufacturing of filtering material. P. Galushkov and A. Yelshin. Priority: 29.03.88, Published (1990), Bulletin No. 17.

  29. Patent 1724301 (USSR). Int. Class B 01 D 3/32, Mass-transfer apparatus. A. Pankov, A. Yelshin and V. Lukin. Priority: 03.05.90, Published (1992), Bulletin No. 13.

  30. Patent 1623714 (USSR). Int. Class B 01 D 39/10, Filtering element manufacturing method. P. Galushkov and A. Yelshin. Priority: 17.02.89, Published (1991), Bulletin No. 4.

  31. Patent 1710103 (USSR). Int. Class B 01 D 39/12, Method of filtering element manufacturing. A. Yelshin and P. Galushkov. Priority: 19.12.89, Published (1992), Bulletin No. 5.

  32. Patent 1602041 (USSR). Int. Class, Coal-water slurry. V. Saskovec, A. Yelshin, et al. Priority: 6.09.88, Published 22.06.90.

  33. Patent 1614486 (USSR). Int. Class, Coal-water slurry. V. Saskovec, A. Yelshin, et al. Priority: 6.09.88, Published 15.08.90.

  34. Patent 1748333 (USSR). Int. Class B 01 D 29/00, Vacuum filtration method. A. Yelshin. Priority: 29.05.90, Published 15.03.92.

  35. Patent 1766463 (USSR). Int. Class B 01 D 39/12, G 21 F 9/04, Method of radioactive slurry filtration. A. Yelshin, P. Galushkov. Priority: 28.05.90, Published (1992), Bulletin No. 37.

  36. Patent 1775131 (USSR). Int. Class, Candle filter. A. Yelshin, A. Maculevich. Priority: Published (1992), Bulletin No. 42.

  37. Patent 1912 (Belarus), Int. Class C 22 B 13/00. Lead accumulator sludge treatment method. P. Galushkov, A. Yelshin. Priority 3.06.93. Published 11.06.97.

  38. Application 5020761/26 (USSR). Device for materials separation. A. Yelshin and A. Linkevich. Priority 25.11.91. Registration data 26.06.92.

  39. Application 00347-01 (Belarus), Solid waste treatment method. P. Galushkov, A. Yelshin. Priority 3.06.93.

  40. Patent 2608 (Belarus), Int. Class B 01 D 63/00. Membrane module of liquid separation plant. G. Golub, A. Yelshin, N. Popok, et al. Priority 13.02.95. Published 30.12.98.

  41. Pa tent 6641 ( Belarus ). Int. Class C21 B01D27/00. Cartridge filter for fine purification. A.I. Vegera and A.I. Yelshin. Priority 02.04.2001. Publeshed 30.12.2004.
 
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