INSTITUTE OF ELECTROCHEMISTRY
AND ENERGY SYSTEMS
“ACADEMICIAN EVGENI BUDEVSKI”

Method for the separation of hydrogen sulfide and sulfur dioxide from fluids
V. Beshkov, D. Uzun, E. Razkazova-Velkova, K. Petrov

• Patent Office of the Republic of Bulgaria, Order № 66997, 21.11.2019 (in Bulgarian)

Alkaline rechargeable nickel-zinc battery
D. Kovacheva, L. Stoyanov, . M. Mladenov, R. Raycheff

• Patent Office of the Republic of Bulgaria, № 66966, 03.09.2019 (in Bulgarian)

Hydrogen cell for testing membrane electrode stack (useful model)
E. Slavcheva, G. Borisov, N. Borisov

• Patent Office of the Republic of Bulgaria, № 3229, 07.08.2019 (in Bulgarian)

Electrolysis cell for testing membrane electrode stack (useful model)
E. Slavcheva, G. Borisov, D. Paskalev, I. Boshnakova, E. Petkucheva, K. Maksimova-Dimitrova, I. Velyanov

• Patent Office of the Republic of Bulgaria, № 3218, 26.07.2019 (in Bulgarian)

Expander for negative electrodes of lead-acid rechargeable cells and batteries
V. Naidenov

• Patent Office of the Republic of Bulgaria, № 66915, 24.06.2019 (in Bulgarian)

Conductive grid for negative and positive plates of lead-acid batterie
V. Naidenov, M. Cherneva

• Patent Office of the Republic of Bulgaria, № 66754, 08.10.2018 (in Bulgarian)

Active zinc electrode composition for alkali rechargeable batteries
A. Stoyanova-Ivanova, D. Kovacheva, L. Stoyanov, M. Mladenov, R. Raychev, S. Terzieva

• Patent Office of the Republic of Bulgaria, № 66730, 28.08.2018 (in Bulgarian)

Method for the preparation of nanosized thin films of ZnO with controllable orientation
V. Blaskov, O. Dimitrov, I. Stambolоva, S. Vassilev

• Patent Office of the Republic of Bulgaria,  № 66712, 15.08.2018 (in Bulgarian)

Modular electrolysis cell for production of oxyhydorgen mixture (usefull model)
E. Slavcheva, G. Borisov, D. Paskalev, I. Boshnakova, E. Petkucheva, K. Maximowa-Dimitorva

• Patent Office of the Republic of Bulgaria, № 2980, 16.07.2018 (in Bulgarian) 

Carbon-free gas-diffusion electrodes for secondary metal-air batteries (useful model)
D. Vladikova, M. Slavova, B. Abrashev, B. Burdin, E. Mladenova

• Patent Office of the Republic of Bulgaria, № 2978, 12.07.2018 (in Bulgarian)

Negative electrode and electrolytic solution for lead-acid battery, method for manufacturing the same, and lead-acid battery comprising said negative electrode or electrolytic solution
V. Naidenov, D. Pavlov, S. Vassilev, Y. Milusheva, T. Shibahara, S. Minoura

• WO2017138045 A1, Filing Date Aug: 31, 2016, Publication Date: Aug 17, 2017
• EP3384543 (B1), Filing Date: 31 Oct 2016, Publication Date: 10 Apr 2019

Negative electrode for lead-acid battery, lead-acid battery and method for manufacturing negative electrode for lead-acid battery
V. Naidenov, D. Pavlov, S. Vassilev, Y. Milusheva, T. Shibahara, S. Minoura

• WO2017138038 A1, Filing Date Feb: 9, 2016, Publication Date: Aug 17, 2017

Device management and control of the work of the constituent battery (usefull model)
P. Lazarov, B. Velev, K. Stoyanov ("TRIOTEH" DZZD), L. Lyutskanov ("TRIOTEH" DZZD), Br. Banov ("TRIOTEH" DZZD)

• Office of the Republic of Bulgaria, № 2151, 30.11.2015 (in Bulgarian)

Gas diffusion electrode and process for making same
G. Finkelshtain, K. Petrov, N. Borchtchoukova, Y. Pashkevich 

• WO2014205259 A1, Filing Date: 19 Jun 2014, Publication Date: 24 Dec 2014
• EP 3011625 A1, Filing Date: 19 Jun 2014, Publication Date: 27 Apr 2016
• US 20160141629 A1, Filing Date: 19 Jun 2014, Publication Date: 19 May 2016

Fuel cell including a cathode having channels
Z. Stoynov, D. Vladikova, A. Thorel, A. Chesnaud, M. Viviani, A. Barbucci

• WO 2013/064783, Filing Date: 31 Oct 2012, Publication Date: 10 May 2013
• EP 2774202 A1, Filing Date: 31 Oct 2012, Publication Date: 10 Sep 2014

Fuel cell with monolithic electrolytes membrane assembly
Thorel, Z. Stoynov, D. Vladikova, A. Chesnaud, M. Viviani, S. Presto

• US 20120156573 A1, Filing Date: 15 Dec 2011, Publication Date: 21 Jun 2012
• EP 2466673 A1, Filing Date: 15 Dec 2011, Publication Date: 20 Jun 2012

Valve-regulated lead-acid cells and batteries and separators used in such cells and batteries
D. Pavlov, S. Ruevski, V. Naidenov, V. Mircheva, G. Petkova, M. Dimitrov, T. Rogachev, M. Cherneva-Vasileva, 

• US 6509118 B1, Filing Date: 2 Jul 1998, Publication Date: 21 Jan 2003

Organic expander for lead-acid storage batteries
T.J. McNally, M. E. Sanford, B. O. Myrvold, D. Pavlov,  T. Rogachev, G. Papazov, M. Matrakova

• WO 2001028012 A1, Filing Date: 19 Sep 2000, Publication Date: 19 Apr 2001
• US 6346347 B1, Filing Date: 21 Sep 1999, Publication Date: 12 Feb 2002
• US 6664002 B2, Filing Date: 11 Dec 2001, Publication Date: 16 Dec 2003

Electrolyte additives for lead acid batteries
M. Matrakova, P. Nikolov, A. Nikolova

• U.S. Patent and Trademark Office, Provisional application , Date: 06 September 2019

Controllable bi-directional valve for valve-regulated lead-acid batteries
V. Naidenov

• Patent Office of the Republic of Bulgaria, Order №112913, 17.04.2019

Carbon-free gas-diffusion electrodes for secondary metal-air batteries and methods therein
D. Vladikova, M. Slavova, B. Abrashev, B. Burdin, E. Mladenova

• Patent Office of the Republic of Bulgaria, Order № 112722, 18.04.2018

Device for heating lead-acid batteries, operated at low temperatures, and batteries with this device
V. Naidenov

• Patent Office of the Republic of Bulgaria, Order № 112718, 10.04.2018

Method and system for monitoring and control work of the constituent battery
P. Lazarov , B. Velev, K. Stoyanov (TRIOTEH DZZD), L. Lyutskanov (TRIOTEH DZZD), Br. Banov  (TRIOTEH DZZD)

• Patent Office of the Republic of Bulgaria, Order № 112 037, 12.06.2015

Method and device for processing fuel
P. Lazarov (BIELT-SLR Ltd.), Br. Banov, Sv. Malinov

• Patent Office of the Republic of Bulgaria, Order № 111 903, 15.01.2015

Zinc electrode for alkaline rechargeable nickel-zinc batteries
M. Mladenov, R. Rajcheff, D. Kovacheva, L. Stoyanov

• Patent Office of the Republic of Bulgaria, Order № 111 703, 17.02.2014