On the base of this section Central institute of elements was created at the Government economic group “Isot”. J. Kassabov was its director from the very begining (15.03.1967 – 01.12.1973). He managed Central institute of elements (01.06.1974–31.12.1978) after renamed as Institute of microelectronic elements

When Institute of microelectronics was transmited under authority of Government economic group “Electronic elements” in Botevgrad, J. Kassabov became vice-director general of this group (01.12.1973 – 01.06.1974)

J. Kassabov was vice-director of the United Centre of Physics at the Bulgarian Academy of Sciences (01.08.1982 – 01.01.1988)

He was director of the Central laboratory of external memory devices at the Institute of Information and Computing technics at the Bulgarian Academy of Sciences (1984 – 1989)

Research

Integral electronics was built by Jordan Kassabov in Bulgaria since 1967

He prodused pure silicon and extend its monocristals (1959 – 1967). Instalation for silicon melting without tigles was invented under his leadership. Technology for quick crystal growt of thick layers of silicon oxide and vacuum method for phosphorus diffusion in silocon [2]

J. Kassabov created technology for sun batterys with high efficiency from silicon. Thechnology and Workshop for MOS integral set up were built under his leadership in Botevgrad. This factory produced electronic calculators after that

Awards

1. Jordan Kassabov was coresponding member of Bulgarian Academi of Sciences.

2. Scientific secretary of Third national symposium with internationl participation “Physics and electronisation”, 1–3 November 1984, Plovdiv

3. He was editor in chief of the "Nature", magasine of BAS

4. Member of the Co-ordination Centre of information and calculation technics

5. Prise 100 years BAS (1969)

6. Prise in physics and mathematics of the Union of Scientists of Bulgaria (1973)

7. Member of the European Physical Society (1974)

8. Medal "Ciryle and Metodiy" І degree (1985)