ES421253A1 - Un procedimiento para la preparacion de nuevos 11,11-alco- hiliden-esteroides. - Google Patents

Un procedimiento para la preparacion de nuevos 11,11-alco- hiliden-esteroides.

Info

Publication number
ES421253A1
ES421253A1 ES421253A ES421253A ES421253A1 ES 421253 A1 ES421253 A1 ES 421253A1 ES 421253 A ES421253 A ES 421253A ES 421253 A ES421253 A ES 421253A ES 421253 A1 ES421253 A1 ES 421253A1
Authority
ES
Spain
Prior art keywords
novel
alkylidene
steroids
alkylidene steroids
estrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES421253A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo NV
Original Assignee
Akzo NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL7216767A external-priority patent/NL175063C/xx
Priority claimed from NL7315704A external-priority patent/NL7315704A/xx
Application filed by Akzo NV filed Critical Akzo NV
Publication of ES421253A1 publication Critical patent/ES421253A1/es
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J5/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • C07J5/0046Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond substituted in position 17 alfa
    • C07J5/0053Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond substituted in position 17 alfa not substituted in position 16
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C07J1/0051Estrane derivatives
    • C07J1/0081Substituted in position 17 alfa and 17 beta
    • C07J1/0085Substituted in position 17 alfa and 17 beta the substituent in position 17 alfa being a saturated hydrocarbon group
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C07J1/0051Estrane derivatives
    • C07J1/0059Estrane derivatives substituted in position 17 by a keto group
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C07J1/0051Estrane derivatives
    • C07J1/0081Substituted in position 17 alfa and 17 beta
    • C07J1/0088Substituted in position 17 alfa and 17 beta the substituent in position 17 alfa being an unsaturated hydrocarbon group
    • C07J1/0092Alkenyl derivatives
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C07J1/0051Estrane derivatives
    • C07J1/0081Substituted in position 17 alfa and 17 beta
    • C07J1/0088Substituted in position 17 alfa and 17 beta the substituent in position 17 alfa being an unsaturated hydrocarbon group
    • C07J1/0096Alkynyl derivatives
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J11/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 3
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J21/00Normal steroids containing carbon, hydrogen, halogen or oxygen having an oxygen-containing hetero ring spiro-condensed with the cyclopenta(a)hydrophenanthrene skeleton
    • C07J21/005Ketals
    • C07J21/008Ketals at position 17
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J33/00Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton
    • C07J33/005Normal steroids having a sulfur-containing hetero ring spiro-condensed or not condensed with the cyclopenta(a)hydrophenanthrene skeleton spiro-condensed
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J5/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • C07J5/0007Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa
    • C07J5/0023Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa substituted in position 16
    • C07J5/003Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond not substituted in position 17 alfa substituted in position 16 by a saturated or unsaturated hydrocarbon group including 16-alkylidene substitutes
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J51/00Normal steroids with unmodified cyclopenta(a)hydrophenanthrene skeleton not provided for in groups C07J1/00 - C07J43/00
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J53/00Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by condensation with a carbocyclic rings or by formation of an additional ring by means of a direct link between two ring carbon atoms, including carboxyclic rings fused to the cyclopenta(a)hydrophenanthrene skeleton are included in this class
    • C07J53/002Carbocyclic rings fused
    • C07J53/0043 membered carbocyclic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • C07J7/0015Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group not substituted in position 17 alfa
    • C07J7/002Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group not substituted in position 17 alfa not substituted in position 16
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • C07J7/004Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa
    • C07J7/0045Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa not substituted in position 16
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/0005Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
    • C07J7/001Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group
    • C07J7/004Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa
    • C07J7/005Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa substituted in position 16
    • C07J7/0055Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by a keto group substituted in position 17 alfa substituted in position 16 by a saturated or unsaturated hydrocarbon group
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J7/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
    • C07J7/008Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms substituted in position 21
    • C07J7/0095Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms substituted in position 21 carbon in position 21 is part of carboxylic group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)
ES421253A 1972-12-09 1973-12-07 Un procedimiento para la preparacion de nuevos 11,11-alco- hiliden-esteroides. Expired ES421253A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7216767A NL175063C (nl) 1972-12-09 1972-12-09 Werkwijze ter bereiding van 11,11-alkylideensteroiden, werkwijze ter bereiding van farmaceutische preparaten en gevormde farmaceutische preparaten.
NL7315704A NL7315704A (en) 1973-11-15 1973-11-15 11,11-Alkylidene steroids - of the oestrane, pregnane and 19-norpregnane series

Publications (1)

Publication Number Publication Date
ES421253A1 true ES421253A1 (es) 1976-07-16

Family

ID=26644839

Family Applications (1)

Application Number Title Priority Date Filing Date
ES421253A Expired ES421253A1 (es) 1972-12-09 1973-12-07 Un procedimiento para la preparacion de nuevos 11,11-alco- hiliden-esteroides.

Country Status (14)

Country Link
US (1) US3927046A (es)
JP (1) JPS5933600B2 (es)
CA (1) CA1021318A (es)
CH (1) CH614453A5 (es)
DE (1) DE2361120C2 (es)
DK (2) DK135047B (es)
ES (1) ES421253A1 (es)
FI (1) FI54128C (es)
FR (1) FR2209577B1 (es)
GB (1) GB1455270A (es)
IE (1) IE38617B1 (es)
IL (1) IL43762A (es)
PH (1) PH11191A (es)
SE (1) SE414771B (es)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL188581C (nl) * 1974-07-15 1992-08-03 Akzo Nv Werkwijze voor het bereiden van 11beta-hydroxy-18-alkylestraanverbindingen.
FR2377419A1 (fr) * 1977-01-13 1978-08-11 Roussel Uclaf Nouveaux derives steroides 11b-substitues 1,3,5 (10) trieniques, leur procede de preparation et leur application comme medicament
FR2377418A1 (fr) * 1977-01-13 1978-08-11 Roussel Uclaf Nouveaux derives steroides 4,9-dieniques 11b-substitues, leur procede de preparation et leur application comme medicaments
NL7701384A (nl) * 1977-02-10 1978-08-14 Akzo Nv Werkwijze voor het bereiden van nieuwe steroiden van de oestraanreeks.
DE2913381A1 (de) * 1979-03-30 1980-10-16 Schering Ag 11-methylensteroide, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische praeparate
DE3042529A1 (de) * 1980-11-07 1982-06-24 Schering Ag, 1000 Berlin Und 4619 Bergkamen 11-methylen- (delta)(pfeil hoch)1(pfeil hoch)(pfeil hoch)5(pfeil hoch) -steroide, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische praeparate
AU572589B2 (en) * 1983-12-14 1988-05-12 Upjohn Company, The 11(alpha)-difluoromethyl and (e)-and (z)-11-fluoromethylene steroids
US4567000A (en) * 1984-08-31 1986-01-28 The Upjohn Company 11-Difluoromethylene steroids
JPS6161578U (es) * 1984-09-27 1986-04-25
IE58562B1 (en) * 1985-07-24 1993-10-06 Akzo Nv Novel 11-methylene-oestr-15-enes, processes for their preparation, and pharmaceutical compositions
US5236913A (en) * 1985-07-24 1993-08-17 Akzo N.V. 11-methylene-oestr-15-enes, processes for their preparation, and pharmaceutical compositions
US4662065A (en) * 1986-05-22 1987-05-05 Battery Engineering, Inc. Method for dehydrating manganese dioxide
CA2100514C (en) * 1992-07-29 2005-03-29 Johannes A. M. Hamersma 17-spiromethylene steroids
ZA94715B (en) * 1993-02-08 1994-10-24 Akzo Nv Steroids for treating menopausal complaints
DE4330727C2 (de) * 1993-09-10 1998-02-19 Jenapharm Gmbh Steroidzwischenprodukte und Verfahren zu ihrer Herstellung
DE4344462C2 (de) 1993-12-22 1996-02-01 Schering Ag Zusammensetzung für die Empfängnisverhütung
DE4413184A1 (de) * 1994-04-12 1995-10-19 Schering Ag 10,11-C¶3¶-überbrückte Steroide
DE19723390C1 (de) * 1997-06-04 1998-06-10 Jenapharm Gmbh 9alpha-Hydroxy-8alpha-estra-1,3,5(10)-triene und Verfahren zu deren Herstellung
US5952319A (en) * 1997-11-26 1999-09-14 Research Triangle Institute Androgenic steroid compounds and a method of making and using the same
US6054446A (en) * 1997-12-24 2000-04-25 Sri International Anti-estrogenic steroids, and associated pharmaceutical compositions and methods of use
JP2004522754A (ja) * 2001-02-02 2004-07-29 ファルマシア・コーポレーション 月経困難症の治療および予防のための組み合わせ治療としてシクロオキシゲナーゼ‐2阻害剤および性ステロイドを使用する方法
IL163666A0 (en) 2002-02-22 2005-12-18 New River Pharmaceuticals Inc Active agent delivery systems and methods for protecting and administering active agents
ITMI20021755A1 (it) * 2002-08-02 2002-11-01 Poli Ind Chimica Spa Processo e nuovi intermedi per la preparazione di steroidi ad attivita' progestinica.
HUP0301332A3 (en) * 2003-05-14 2006-04-28 Richter Gedeon Vegyeszet New mono-and bismethylene steroid derivatives and process for their synthesis and pharmaceutical compositions containing them
CN101445542B (zh) * 2008-12-25 2010-12-29 北京市科益丰生物技术发展有限公司 一种去氧孕烯的制备方法
CN101857624B (zh) * 2010-06-25 2012-12-12 北京紫竹药业有限公司 去氧孕烯的制备工艺及其中间体化合物
CN102964418B (zh) * 2010-06-25 2015-04-15 华润紫竹药业有限公司 去氧孕烯的制备工艺及其中间体化合物
CN102532232A (zh) * 2010-12-27 2012-07-04 上海信谊药厂有限公司 去氧孕烯的制备方法
US20130123523A1 (en) * 2011-11-10 2013-05-16 Klaus Nickisch Methods for the preparation of etonogestrel and desogestrel
ES2576231T3 (es) 2011-12-23 2016-07-06 Crystal Pharma S.A.U Proceso para alquinilar 17-cetoesteroides 16-sustituidos
HUE046656T2 (hu) 2012-03-15 2020-03-30 Merck Sharp & Dohme Kombinált szintézisútvonal etonogestrel és desogestrel számára
ITMI20121472A1 (it) * 2012-09-04 2014-03-05 Ind Chimica Srl Processo per la preparazione di 11-metilen-18-metilestr-4-en-3,17-dione, utile come intermedio per la sintesi di molecole ad attivita' farmacologica
ES2881336T3 (es) * 2016-03-03 2021-11-29 Crystal Pharma Sau Procedimiento y nuevos productos intermedios para la preparación de 11-metilen-esteroides
CN107082793B (zh) * 2017-06-16 2019-07-05 上海共拓医药化工有限公司 去氧孕烯重要中间体的制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912036A (en) * 1960-06-23 1962-12-05 British Drug Houses Ltd 11-methylene-5ª--steroids
US3299108A (en) * 1965-10-18 1967-01-17 Searle & Co 17alpha-alkynyl/alkenyl-13beta-alkyl-11-alkylgona-1, 3, 5 (10)-triene-3, 17beta-diols, ethers and esters thereof and intermediates thereto
US3325520A (en) * 1965-12-08 1967-06-13 Searle & Co (optionally 17-hydrocarbon-substituted) 11, 13beta-dialkylgon-4-en-3-ones and esters corresponding
US3346602A (en) * 1966-10-12 1967-10-10 Searle & Co 13beta-alkyl-11-alkylgona-1, 3, 5 (10)-trien-17-ones, ethers and esters thereof
US3527778A (en) * 1969-02-27 1970-09-08 Searle & Co 3,17 - bisoxygenated 11betamethyl - 19 - norpregn - 4 - en - 20 - ones and derivatives thereof

Also Published As

Publication number Publication date
US3927046A (en) 1975-12-16
FI54128C (fi) 1978-10-10
DE2361120C2 (de) 1984-01-19
IL43762A0 (en) 1974-03-14
IE38617L (en) 1974-06-09
JPS5933600B2 (ja) 1984-08-16
CA1021318A (en) 1977-11-22
SE414771B (sv) 1980-08-18
JPS5029548A (es) 1975-03-25
DK147405C (da) 1985-02-04
FI54128B (fi) 1978-06-30
FR2209577A1 (es) 1974-07-05
DK293776A (da) 1976-06-30
GB1455270A (en) 1976-11-10
AU6326373A (en) 1975-06-05
DK135047B (da) 1977-02-28
IL43762A (en) 1978-04-30
DK147405B (da) 1984-07-23
IE38617B1 (en) 1978-04-26
FR2209577B1 (es) 1977-06-03
DE2361120A1 (de) 1974-06-12
PH11191A (en) 1977-10-28
CH614453A5 (es) 1979-11-30
DK135047C (es) 1977-07-25

Similar Documents

Publication Publication Date Title
ES421253A1 (es) Un procedimiento para la preparacion de nuevos 11,11-alco- hiliden-esteroides.
ES433049A1 (es) Procedimiento para la preparacion de nuevos esteroides de laserie del estrano.
ES419226A1 (es) Un procedimiento para la preparacion de compuestos conju- gados de acido fusidico.
ES439956A1 (es) Un procedimiento para la preparacion de d-homoesteroides de la serie del pregnano.
ES436846A1 (es) Procedimiento para preparar nuevos esteroides de la serie del estrano sustituidos en la posicion 11.
ES423481A1 (es) Procedimiento para la produccion de dexametasona y sus 21- esteres.
ES425224A1 (es) Procedimiento para la preparacion de nuevos esteroides de la serie del estrano sustituidos en la posicion 7.
ES422922A1 (es) Procedimiento de preparacion de nuevos derivados dienicos de la serie del androstano.
IL39821A0 (en) 21-esters of 11,17,21-trihydroxy-pregna-1,4-diene-3,20-dione derivatives
GB1440064A (en) Delta8-9- steroids of the pregnane series
ES388784A1 (es) Un procedimiento de preparacion de la 17 alfa - hidroxi - pregna - 4,9 (11)-dieno - 3,20 - diona.
IE38665B1 (en) 2,2,10,17-tetramethyl steroids a process for their preparation and compositions containing them
GB1366329A (en) Process for the manufacture of delta4-3-oxo-1alpha-methylsteroids
ES382098A1 (es) Procedimiento para la preparacion de nuevas 14 beta-hidro- xi-15 alfa-aciloxi-cardenolidas.
IE37597L (en) 21-fluoro pregnanes.
GB1131445A (en) Novel steroids
GB983125A (en) Preparation of 9(11)-dehydro spirostanes and 3-esters thereof
GB1323383A (en) Pregna-4,9-diene processes for its preparation and compositions thereof
ES451297A1 (es) Un procedimiento para la preparacion de d-homoesteroides.
ES415479A1 (es) Procedimiento para preparar oxaprostaglandinas.
CA890901A (en) Process for the manufacture of 11-oxygenated steroids of the pregnane series
ES387227A1 (es) Procedimiento para la preparacion de nuevos derivados de benzopirano.
ES354795A1 (es) Procedimiento de preparacion de nuevos 4,6-dicloro-delta4,6-esteroides de la serie pregnano y androstano.
AU464957B2 (en) Novel process forthe preparation of steroids ofthe pregnane series
GB1161324A (en) Unsaturated Lactones of the Steroid Series and Process for Preparing them

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19960212