• derivation of the boundary conditions for a piezo-semiconducting halfspace with electron drift at the limit of vanishing diffusion.
• first application of Michajlow criterion for stability analysis of the moving elastic bodies, the method later exploited in R. Bogacz's research works.
• a 3-transducers method for measurements of SAW velocity, later patented by W. Soluch helped him in his scientific career.
• a proposal, analysis and experimantal verification of fan IDTs, later the subject of PhD thesis of J. Lamperski; still investigated in SAW literature.
• generation and filtration of Barker and complementary series in SAW technique, including Doppler effects.
• a proposal and first theoretical analysis of capacitively weighted interdigital transducers (IDT).
• dispersive IDT with periodic fingers; first proposed and exploited in SAW devices for radar applications, is being produced in Poland 10 years before abroad. Still widely applied and investigated, become a subject of J. Filipiak's hab. disertation.
• designing of a number of first SAW devices in Poland that gave foundations for development of SAW technology in Poland: TV filter, delay lines, RAC compressor, convolver.
  A proposal, theory and experimental verification of SAW resonator with metal grating reflectors, currently widely applied.
• a method for reduction of mirror passband in dispersive IDT, and its industrial application.
• development of the spectral theory of IDT accounting for the strip elasticity; the only theory applicable for analysis of interconnected electrode structures like RMSC. The theory yielded the P-matrix model of IDT fingers, a rigorous alternative to the COM model.
• theory of obligue propagation of SAW under periodic strips, later the subject of PhD. dissertation of D. Gafka.
• novel theoretical and experimantal approach in investigation of SAW difraction in SAW devices.
• a proposal and first experimental investigations of plate waves in piezoelectrics as the alternative to SAWs; later the subject of PhD. thesis of D. Bogucki.
• derivation of the generalized Tiersten boundary conditions for corrugated surface of anisotropic piezoelectrics, the foundation for modelling of many SAW devices.
• first rigorous theory of SSBW devices; derivation of the dispersive equation that, after simplification, became known as the "Plessky dispersive equation" in the SAW literature.
• first rigorous theory of unidirectional transducers.
• derivation of Green's function of anisotropic dielectric substrate.
• theory of piezoelectric waveguides of SAW.
• derivation of Green's function approximation for piezoelectrics supporting SH waves, and its generalization to arbitrary anisotropic elestic body in Stroh formalism.
• investigation of "interfacial waves" and their analysis in important crystals.
• novel approach to electrostatic problems for strips, effectively applied in designing of SAW devices, and in the problem of scattering of SAW by the group of strips.
• proposal, theoretical description and experimental verification of novel SAW components: RMSC, MMM, RTS etc.
• quantitative theory of comb transducers of SAW including efficiency and contactless comb transducers.
• new approach to the Rayleigh problem for deep grooves and thick strips.
• closed-form solution for single-phase unidirectional IDTs.
• full description of HVPSAW by means of Green's function approximation.
• theory of SAW diffraction by conducting elliptic disk.
• a published FORTRAN code of general importance for analysis of SAW in piezoelectrics.
• investigation of sniper localization by means of the bullet shock wave directional measurements.
• proposal of Doppler-radar countersniper system and its calibration.
• new approach to the beamforming problem.