The list of the inventor's certificates

1. Postnikov V.S., Gridnev S.A., Pronin V.V., Vasin A.V. A device for measuring piezoelectric modulus // Inventor's certificate N 463370, 1974.
2. Gridnev S.A., Barmina N.V., Pavlova N.G., Parfenova N.N., Smirnova E.P. A piezoelectric ceramic material // Inventor's certificate N 742415, Bulletin of inventions. N 23,1980.
3. Gridnev S.A.,Ostapenko S.P. A resistive material // Inventor's certificate N 801117, Bulletin of inventions. N 4,1981.
4. Gridnev S.A., Pavlova N.G., Dronov I.A. A piezoelectric ceramic material // Inventor's certificate N 939425, Bulletin of inventions. N 24, 1982.
5. Gridnev S.A., Pavlova N.G., Popov V.M., Loginova Z.S. A piezoelectric ceramic material // Inventor's certificate N 1100271, Bulletin of inventions. N 24,1984.
6. Gridnev S.A., Pavlova N.G., Rasskazov A.N., Rudenko V.O. A piezoelectric ceramic material // Inventor's certificate N 35, Bulletin of inventions, N 35, 1984.
7. Gridnev S.A., Darinskii B.M. Method of a definition of a phase transition order in solid crystals // Inventor's certificate N 1233021, Bulletin of inventions. N 19,1986.
8. Gridnev S.A.,Ostapenko S.P., Isupov V.A., Loginova Z.S. Piezoelectric ceramic material // Inventor's certificate N 1330117, Bulletin of inventions. N 30,1987.
9. Gridnev S.A., Darinskii B.M., Popov V.M. Method of a definition of phase transition type in ferroelectric solid crystals // Inventor's certificate N 1343326, Bulletin of inventions. N 37,1987.
10. Gridnev S.A., Kudrjash V.I., Darinskii B.M. The method of definition of residual shear strain of ferroelastic crystals // Inventor's certificate N 1422094, Bulletin of inventions. N 33,1988.
11. Gridnev S.A., Darinskii B.M. The method of definition of character of a structural phase transition in crystals // Inventor's certificate N 1481654, Bulletin of inventions, N 19, 1989.
12. Gridnev S.A., Pavlova N.G. A piezoelectric ceramic material // Inventor's certificate N 1500985, Bulletin of inventions. N 30,1989.
13. Gridnev S.A.,Ostapenko S.P., Ivanov O.N. Piezoelectric ceramic material // Inventor's certificate N 1655953, Bulletin of inventions. N 22,1991.
14. Gridnev S.A., Pavlova N.G., Rogova S.P., Korotkov L.N. A piezoelectric ceramic material // Inventor's certificate N 1682352, N 37, 1991.
15. Gridnev S.A.,Ostapenko S.P., Dybova O.V. A piezoelectric ceramic material // Inventor's certificate N 1717590, Bulletin of inventions. N 9,1992.
16. Gridnev S.A., Pavlova N.G., Fedorov O.P., Rogova S.P. A piezoelectric ceramic material // Inventor's certificate N 1731761, Bulletin of inventions. N 17,1992.
17. Gridnev S.A.,Ostapenko S.P., Dybova O.V. Piezoelectric ceramic material // Inventor's certificate N 1738797, Bulletin of inventions. N 21,1992.
18. Gridnev S.A., Isupov V.A., Pavlova N.G., Rogova S.P., Gorbatenko V.V.Mixture of a piezoelectric ceramic material // the Patent of Russian Federation N 1771183, Bulletin of inventions. N 39,1992.
19. Gridnev S.A.,Ostapenko S.P., Ivanova O.A., Fadeev S.A. A piezoelectric ceramic material // Inventor's certificate N 1804045, Bulletin of inventions. N 11,1993.
20. Gridnev S.A., Popov V.M., Shuvalov L.A. Method of definition of concentration of the point defects with a known charge in ferroelectric crystals // the Patent of Russian Federation N 1790762, Bulletin of inventions. N 3,1993.
21. Gridnev S.A.,Ostapenko S.P., Rogova S.P. Method of production of ferroelectric ceramics on the basis of a lead titanate // the Patent of Russian Federation N 1787981, Bulletin of inventions. N 2, 1993.
22. Tsotsorin A.N., Khafizov R.Kh., Gridnev S.A. Composition for manufacturing of electrostriction ceramic material // the Patent of Russian Federation ? 2290383, Bulletin of inventions ? 36, 2006 a.