GB1311324A - Test device for detecting low concentrations of substances in fluids - Google Patents
Test device for detecting low concentrations of substances in fluidsInfo
- Publication number
- GB1311324A GB1311324A GB1099370A GB1099370A GB1311324A GB 1311324 A GB1311324 A GB 1311324A GB 1099370 A GB1099370 A GB 1099370A GB 1099370 A GB1099370 A GB 1099370A GB 1311324 A GB1311324 A GB 1311324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wick
- reagent
- test
- ion exchange
- members
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/54—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving glucose or galactose
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
- G01N33/521—Single-layer analytical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
- G01N33/525—Multi-layer analytical elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/17—Nitrogen containing
- Y10T436/173845—Amine and quaternary ammonium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/19—Halogen containing
- Y10T436/193333—In aqueous solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/20—Oxygen containing
- Y10T436/200833—Carbonyl, ether, aldehyde or ketone containing
- Y10T436/201666—Carboxylic acid
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Urology & Nephrology (AREA)
- Analytical Chemistry (AREA)
- Microbiology (AREA)
- Pathology (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Medicinal Chemistry (AREA)
- Biophysics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Food Science & Technology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Emergency Medicine (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00811935A US3811840A (en) | 1969-04-01 | 1969-04-01 | Test device for detecting low concentrations of substances in fluids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1311324A true GB1311324A (en) | 1973-03-28 |
Family
ID=25207995
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1099370A Expired GB1311324A (en) | 1969-04-01 | 1970-03-06 | Test device for detecting low concentrations of substances in fluids |
| GB3695472A Expired GB1311325A (en) | 1969-04-01 | 1970-07-30 | Test device and method for detecting chlorine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3695472A Expired GB1311325A (en) | 1969-04-01 | 1970-07-30 | Test device and method for detecting chlorine |
Country Status (6)
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0198628A1 (en) * | 1985-04-11 | 1986-10-22 | Smithkline Diagnostics, Inc. | Device and method for whole blood separation and analysis |
| EP0205078A1 (en) * | 1985-06-11 | 1986-12-17 | Miles Inc. | Test strips and process for the production of test strips |
| DE3616105A1 (de) * | 1986-05-13 | 1987-11-19 | Merck Patent Gmbh | Teststreifen |
| EP0313805A1 (de) * | 1987-09-30 | 1989-05-03 | Bayer Ag | Indikatoren und Verfahren zum Anzeigen von organischen Verbindungen in Wasserströmen |
| EP0279097A3 (en) * | 1987-02-17 | 1991-01-30 | Genesis Labs, Inc. | Immunoassay test strip |
| WO1992022814A1 (en) * | 1991-06-19 | 1992-12-23 | Hypoguard (Uk) Limited | Support medium |
| FR2687473A1 (fr) * | 1991-06-25 | 1993-08-20 | Saliva Diagnostic System Inc | Dispositif d'echantillonnage et systeme d'adequation d'echantillon. |
| AU668353B2 (en) * | 1991-06-19 | 1996-05-02 | Hypoguard Limited | Support medium |
Families Citing this family (80)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5622871A (en) * | 1987-04-27 | 1997-04-22 | Unilever Patent Holdings B.V. | Capillary immunoassay and device therefor comprising mobilizable particulate labelled reagents |
| CH583422A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-01-25 | 1976-12-31 | Hoffmann La Roche | |
| US3937613A (en) * | 1975-04-04 | 1976-02-10 | Alpha Chemicals (Australia) Pty. Limited | Device for the determination of chlorine in the water of swimming pools |
| SE399768B (sv) * | 1975-09-29 | 1978-02-27 | Lilja Jan E | Kyvett for provtagning, blandning av, provet med ett reagensmedel och direkt utforande av, serskilt optisk, analys av det med reagensmedlet blandade provet |
| US4083691A (en) * | 1977-04-22 | 1978-04-11 | The United States Of America As Represented By The Secretary Of The Army | Method for detecting contaminants in water |
| DD143379A3 (de) * | 1978-07-25 | 1980-08-20 | Kallies Karl Heinz | Indikatorroehrchen zur glukosebestimmung |
| US4288228A (en) * | 1979-01-31 | 1981-09-08 | Technicon Instruments Corporation | Whole blood analyses and diffusion apparatus therefor |
| US4366241A (en) * | 1980-08-07 | 1982-12-28 | Syva Company | Concentrating zone method in heterogeneous immunoassays |
| DE3043608A1 (de) * | 1980-11-19 | 1982-06-24 | Behringwerke Ag, 3550 Marburg | Analytisches mittel |
| JPS57196153A (en) * | 1981-05-28 | 1982-12-02 | Konishiroku Photo Ind Co Ltd | Analysis element |
| US4956300A (en) * | 1982-01-05 | 1990-09-11 | Helena Laboratories Corporation | Aid for determining the presence of occult blood, method of making the aid, and method of using the aid |
| US5073484A (en) * | 1982-03-09 | 1991-12-17 | Bio-Metric Systems, Inc. | Quantitative analysis apparatus and method |
| DE3233809A1 (de) * | 1982-09-11 | 1984-03-15 | Boehringer Mannheim Gmbh, 6800 Mannheim | Kuevette zur bestimmung chemischer verbindungen in fluessigkeiten |
| SE8305704D0 (sv) * | 1983-10-18 | 1983-10-18 | Leo Ab | Cuvette |
| US5702913A (en) * | 1983-12-21 | 1997-12-30 | Helena Laboratories Corporation | Chromgen-reagent test system |
| US5273888A (en) * | 1984-01-16 | 1993-12-28 | Helena Laboratories Corporation | Chemical test kit and method for determining the presence of blood in a specimen and for verifying the effectiveness of the chemicals |
| US4632901A (en) * | 1984-05-11 | 1986-12-30 | Hybritech Incorporated | Method and apparatus for immunoassays |
| US4624929A (en) * | 1984-12-03 | 1986-11-25 | Syntex (U.S.A.) Inc. | Sample collector and assay device and method for its use |
| JPS61174674U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1985-04-22 | 1986-10-30 | ||
| US5240844A (en) * | 1985-09-13 | 1993-08-31 | Wie Siong I | Test kit for determining the presence of organic materials and method of utilizing same |
| US4900663A (en) * | 1985-09-13 | 1990-02-13 | Environmental Diagnostics, Inc. | Test kit for determining the presence of organic materials and method of utilizing same |
| US5501949A (en) * | 1985-12-10 | 1996-03-26 | Murex Diagnostics Corporation | Particle bound binding component immunoassay |
| US5120504A (en) * | 1986-07-14 | 1992-06-09 | Hybritech Incorporated | Apparatus for immunoassays with vent chennels in the container side wall |
| US4935346A (en) * | 1986-08-13 | 1990-06-19 | Lifescan, Inc. | Minimum procedure system for the determination of analytes |
| US20010023075A1 (en) * | 1992-04-03 | 2001-09-20 | Siu-Yin Wong | A immunodiagnositc device having a dessicant incorporated therein |
| US5763262A (en) * | 1986-09-18 | 1998-06-09 | Quidel Corporation | Immunodiagnostic device |
| US4840919A (en) * | 1987-03-03 | 1989-06-20 | Perfect View, Inc. | Gas dosimeter for colorimetrically indicating the presence of amides |
| US5250412A (en) * | 1987-03-23 | 1993-10-05 | Diamedix Corporation | Swab device and method for collecting and analyzing a sample |
| US4857453A (en) * | 1987-04-07 | 1989-08-15 | Syntex (U.S.A.) Inc. | Immunoassay device |
| ES2150428T3 (es) | 1987-04-27 | 2000-12-01 | Unilever Nv | Ensayos de union especifica. |
| DE3738982A1 (de) * | 1987-04-30 | 1988-11-17 | Diagen Inst Molekularbio | Verfahren zur bestimmung von proteinen, proteinstrukturen und nukleinsaeuren aus koerperfluessigkeiten |
| US5081040A (en) * | 1987-06-29 | 1992-01-14 | Helena Laboratories Corporation | Composition and kit for testing for occult blood in human and animal excretions, fluids, or tissue matrixes |
| WO1989002596A1 (en) * | 1987-09-03 | 1989-03-23 | Environmental Test Systems, Inc. | Solid state test device |
| US4999163A (en) * | 1987-10-29 | 1991-03-12 | Hygeia Sciences, Inc. | Disposable, pre-packaged device for conducting immunoassay procedures |
| US4963325A (en) * | 1988-05-06 | 1990-10-16 | Hygeia Sciences, Inc. | Swab expressor immunoassay device |
| AU2684488A (en) | 1988-06-27 | 1990-01-04 | Carter-Wallace, Inc. | Test device and method for colored particle immunoassay |
| US6352862B1 (en) * | 1989-02-17 | 2002-03-05 | Unilever Patent Holdings B.V. | Analytical test device for imuno assays and methods of using same |
| US5196167A (en) * | 1989-04-04 | 1993-03-23 | Helena Laboratories Corporation | Fecal occult blood test product with positive and negative controls |
| US5217874A (en) * | 1989-04-04 | 1993-06-08 | Helena Laboratories Corporation | Fecal occult blood test product with positive and negative controls |
| US5204062A (en) * | 1989-09-05 | 1993-04-20 | Surgicot Incorporated | Bowie-dick test device |
| US5212065A (en) * | 1990-10-25 | 1993-05-18 | International Diagnostic Systems, Corp. | Rapid assay device |
| US5389338A (en) * | 1991-01-06 | 1995-02-14 | Orgenics Ltd. | Apparatus for dry chemical analysis of fluids |
| US5998220A (en) * | 1991-05-29 | 1999-12-07 | Beckman Coulter, Inc. | Opposable-element assay devices, kits, and methods employing them |
| US5877028A (en) * | 1991-05-29 | 1999-03-02 | Smithkline Diagnostics, Inc. | Immunochromatographic assay device |
| US6168956B1 (en) | 1991-05-29 | 2001-01-02 | Beckman Coulter, Inc. | Multiple component chromatographic assay device |
| US6007999A (en) * | 1991-07-31 | 1999-12-28 | Idexx Laboratories, Inc. | Reversible flow chromatographic binding assay |
| US5726010A (en) * | 1991-07-31 | 1998-03-10 | Idexx Laboratories, Inc. | Reversible flow chromatographic binding assay |
| US5395754A (en) * | 1992-07-31 | 1995-03-07 | Hybritech Incorporated | Membrane-based immunoassay method |
| EP0583980A1 (en) * | 1992-08-20 | 1994-02-23 | Eli Lilly And Company | Method for generating monoclonal antibodies from rabbits |
| US5427739A (en) * | 1992-08-27 | 1995-06-27 | Schering-Plough Healthcare Products, Inc. | Apparatus for performing immunoassays |
| US5354692A (en) * | 1992-09-08 | 1994-10-11 | Pacific Biotech, Inc. | Analyte detection device including a hydrophobic barrier for improved fluid flow |
| US5362650A (en) * | 1993-10-04 | 1994-11-08 | Hach Company | Ultra-low range chlorine determination |
| USD361842S (en) | 1994-05-23 | 1995-08-29 | Carter Wallace, Inc. | Immunoassay test cartridge |
| USD369868S (en) | 1995-01-31 | 1996-05-14 | Carter-Wallace, Inc. | Immunoassay test cartridge |
| US6319676B1 (en) | 1995-05-02 | 2001-11-20 | Carter Wallace, Inc. | Diagnostic detection device and method |
| US5739041A (en) * | 1995-05-02 | 1998-04-14 | Carter Wallace, Inc. | Diagnostic detection device |
| CA2228970A1 (en) * | 1995-08-18 | 1997-02-27 | Donald W. Landry | Detection of organic compounds through regulation of antibody-catalyzed reactions |
| US6030842A (en) * | 1997-07-21 | 2000-02-29 | Environmental Test Systems, Inc. | Method, composition and device for the determination of free halogens in aqueous fluids |
| US6602719B1 (en) | 1999-03-26 | 2003-08-05 | Idexx Laboratories, Inc. | Method and device for detecting analytes in fluids |
| US6551842B1 (en) | 1999-03-26 | 2003-04-22 | Idexx Laboratories, Inc. | Method and device for detecting analytes in fluids |
| US6511814B1 (en) | 1999-03-26 | 2003-01-28 | Idexx Laboratories, Inc. | Method and device for detecting analytes in fluids |
| US6458326B1 (en) | 1999-11-24 | 2002-10-01 | Home Diagnostics, Inc. | Protective test strip platform |
| US6562625B2 (en) | 2001-02-28 | 2003-05-13 | Home Diagnostics, Inc. | Distinguishing test types through spectral analysis |
| US6541266B2 (en) | 2001-02-28 | 2003-04-01 | Home Diagnostics, Inc. | Method for determining concentration of an analyte in a test strip |
| US6525330B2 (en) | 2001-02-28 | 2003-02-25 | Home Diagnostics, Inc. | Method of strip insertion detection |
| WO2003058245A1 (en) * | 2002-01-09 | 2003-07-17 | Inverness Medical Switzerland Gmbh | Liquid sample assay device |
| AU2003295448A1 (en) * | 2002-11-12 | 2004-07-14 | Strategic Diagnostics Inc. | Isolation and confirmation of analytes from test devices |
| CN102401828B (zh) * | 2003-09-23 | 2014-08-06 | 美艾利尔瑞士股份有限公司 | 侧流式检测装置 |
| JP5138967B2 (ja) * | 2007-04-10 | 2013-02-06 | 克史 石田 | 涙液メニスカス検査用具製造方法 |
| DE102008057471B3 (de) * | 2008-11-14 | 2010-05-06 | Axagarius Gmbh & Co. Kg | Vorrichtung zur Bestimmung des Gesamtchlorgehaltes in einer Flüssigkeit |
| US20100317033A1 (en) * | 2009-06-10 | 2010-12-16 | Matthew Philip Abdel | Methods and materials for detecting food containing allergens |
| WO2011087813A2 (en) * | 2009-12-22 | 2011-07-21 | University Of Washington | Capillarity-based devices for performing chemical processes and associated systems and methods |
| US8956859B1 (en) | 2010-08-13 | 2015-02-17 | Aviex Technologies Llc | Compositions and methods for determining successful immunization by one or more vaccines |
| CN105050720A (zh) | 2013-01-22 | 2015-11-11 | 华盛顿大学商业化中心 | 顺序递送流体体积和相关的设备、系统和方法 |
| JP5757371B2 (ja) * | 2013-05-02 | 2015-07-29 | エコー電気株式会社 | 液体検査用具 |
| GB201321430D0 (en) * | 2013-12-04 | 2014-01-15 | Spd Swiss Prec Diagnostics Gmbh | Assay device |
| CN104142392B (zh) * | 2014-08-18 | 2015-12-09 | 深圳市领治医学科技有限公司 | 一种微量样本检测试纸 |
| US9927443B2 (en) | 2015-04-10 | 2018-03-27 | Conquerab Inc. | Risk assessment for therapeutic drugs |
| US9903866B2 (en) | 2016-04-05 | 2018-02-27 | Conquerab Inc. | Portable devices for detection of antibodies against therapeutic drugs |
| WO2021037887A1 (en) | 2019-08-29 | 2021-03-04 | Merck Patent Gmbh | Method and device for the detection and measurement of redox parameters like free chlorine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3018611A (en) * | 1962-01-30 | Timer device and method for determination | ||
| NL289920A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1951-01-28 | |||
| US2785057A (en) * | 1953-12-08 | 1957-03-12 | Union Central Life Insurance C | Device for testing liquids |
-
1969
- 1969-04-01 US US00811935A patent/US3811840A/en not_active Expired - Lifetime
-
1970
- 1970-03-06 GB GB1099370A patent/GB1311324A/en not_active Expired
- 1970-03-13 CA CA077400A patent/CA920931A/en not_active Expired
- 1970-03-31 FR FR7011510A patent/FR2042274A5/fr not_active Expired
- 1970-03-31 DE DE19702015271 patent/DE2015271A1/de active Pending
- 1970-03-31 JP JP45026636A patent/JPS4939720B1/ja active Pending
- 1970-07-30 GB GB3695472A patent/GB1311325A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0198628A1 (en) * | 1985-04-11 | 1986-10-22 | Smithkline Diagnostics, Inc. | Device and method for whole blood separation and analysis |
| EP0205078A1 (en) * | 1985-06-11 | 1986-12-17 | Miles Inc. | Test strips and process for the production of test strips |
| DE3616105A1 (de) * | 1986-05-13 | 1987-11-19 | Merck Patent Gmbh | Teststreifen |
| EP0245767A3 (de) * | 1986-05-13 | 1989-03-15 | MERCK PATENT GmbH | Teststreifen |
| EP0279097A3 (en) * | 1987-02-17 | 1991-01-30 | Genesis Labs, Inc. | Immunoassay test strip |
| EP0313805A1 (de) * | 1987-09-30 | 1989-05-03 | Bayer Ag | Indikatoren und Verfahren zum Anzeigen von organischen Verbindungen in Wasserströmen |
| WO1992022814A1 (en) * | 1991-06-19 | 1992-12-23 | Hypoguard (Uk) Limited | Support medium |
| AU668353B2 (en) * | 1991-06-19 | 1996-05-02 | Hypoguard Limited | Support medium |
| FR2687473A1 (fr) * | 1991-06-25 | 1993-08-20 | Saliva Diagnostic System Inc | Dispositif d'echantillonnage et systeme d'adequation d'echantillon. |
| BE1006232A3 (fr) * | 1991-06-25 | 1994-06-14 | Saliva Diagnostic Systems Inc | Dispositif d'echantillonnage et systeme d'adequation d'echantillon. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1311325A (en) | 1973-03-28 |
| JPS4939720B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-10-28 |
| DE2015271A1 (de) | 1970-10-15 |
| US3811840A (en) | 1974-05-21 |
| CA920931A (en) | 1973-02-13 |
| FR2042274A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |