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1991-04-08
Method of obtaining novel derivatives of propenic acid
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1992-12-16
Method of manufacturing card
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1992-09-15
Method for the preparation of oxophthalazinylacetic acids and their analogues
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1989-10-16
Method of obtaining n-phosphono-methyliminoacetic acid
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1991-03-25
Method for stimultaneous manufacturing of an enzimatic preparation and citric acid
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1991-03-25
method for simultaneous manufacturing of an enzimatic preparation and citric acid
EP0304076A3
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1990-05-30
Method of manufacturing superconductive products
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1989-10-02
Method of simultaneously obtaining citric and isocitric acids
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1988-09-01
The method of obtaining of symmetrical diamides of citric acid
PL275386A1
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1990-04-30
Method of obtaining citric acid
KR100209844B1
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1999-07-15
2-amino-4-methylphosphinobutyric acid derivatives and preparing method thereof
CS275182B2
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1992-02-19
Method of 1-methoxy-2-propanone preparation
CS535389A1
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1990-06-13
Derivative of bis 4-quinolone-6-fluoro-3-carboxylic acid and method of its preparation
CS706288A1
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1990-01-12
Dithioderivatives of carbamoyl-4-hydroxybutanesulphonic acid and method of its preparation
CS279089A1
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1990-08-14
Method of 1-amino-7-naphthol preparation
BG48142A1
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1990-12-14
Amides of benzoxazolonyl- 3- acetic acid and method for its preparation
PL288251A1
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1991-08-12
Method of obtaining novel derivatives of dioxalic acid
BG45618A1
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1989-07-14
Semicarbasides of 4- chlorphenoxiacete acid and method for their preparing
CS682488A1
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1989-09-12
Method of pentachlorohydroxoplatinic acid preparation
CS561288A1
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1989-06-13
Method of digalacturonic acid preparation
PL281889A1
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1991-04-22
Method of manufacturing mullite-zircon
CS257489A1
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1990-12-13
Method of 4-biphenylyl-4-oxo-2-methylbutanoic acids preparation
CS548389A2
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1991-11-12
N-alkylmonoazacrown -n-oxides and method of their preparation
CS150288A1
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1990-09-12
2-amino-2-hydroxymethyl-3,4-trans-epoxy-14-oxo-6-trans-eikosenic acid and method of its preparation
ZA90713B
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1991-02-27
Handbrush and method of manufacture thereof