CN110118739A - 一种玻璃中二价铁和三价铁含量的测定方法 - Google Patents
一种玻璃中二价铁和三价铁含量的测定方法 Download PDFInfo
- Publication number
- CN110118739A CN110118739A CN201910487021.3A CN201910487021A CN110118739A CN 110118739 A CN110118739 A CN 110118739A CN 201910487021 A CN201910487021 A CN 201910487021A CN 110118739 A CN110118739 A CN 110118739A
- Authority
- CN
- China
- Prior art keywords
- glass
- standard solution
- ratio
- iron
- iron content
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 377
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims abstract description 143
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 73
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims description 107
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 1110
- 238000010521 absorption reaction Methods 0.000 claims abstract description 246
- 239000012086 standard solution Substances 0.000 claims abstract description 241
- 229910052742 iron Inorganic materials 0.000 claims abstract description 202
- 239000000243 solution Substances 0.000 claims abstract description 26
- 235000013405 beer Nutrition 0.000 claims description 36
- 238000002835 absorbance Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 21
- 238000001228 spectrum Methods 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 8
- 230000002745 absorbent Effects 0.000 claims description 8
- 235000000396 iron Nutrition 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 230000031700 light absorption Effects 0.000 description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 4
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 4
- 235000010323 ascorbic acid Nutrition 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 4
- 239000004327 boric acid Substances 0.000 description 4
- 238000011088 calibration curve Methods 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000012488 sample solution Substances 0.000 description 4
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical class [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000004737 colorimetric analysis Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007704 wet chemistry method Methods 0.000 description 3
- 150000000996 L-ascorbic acids Chemical class 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229960005070 ascorbic acid Drugs 0.000 description 2
- 239000011668 ascorbic acid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012490 blank solution Substances 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007705 chemical test Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000012224 working solution Substances 0.000 description 2
- 238000004876 x-ray fluorescence Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XGGLLRJQCZROSE-UHFFFAOYSA-K ammonium iron(iii) sulfate Chemical compound [NH4+].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O XGGLLRJQCZROSE-UHFFFAOYSA-K 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- UMEAURNTRYCPNR-UHFFFAOYSA-N azane;iron(2+) Chemical compound N.[Fe+2] UMEAURNTRYCPNR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 208000030208 low-grade fever Diseases 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000005315 stained glass Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910487021.3A CN110118739B (zh) | 2019-06-05 | 2019-06-05 | 一种玻璃中二价铁和三价铁含量的测定方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910487021.3A CN110118739B (zh) | 2019-06-05 | 2019-06-05 | 一种玻璃中二价铁和三价铁含量的测定方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110118739A true CN110118739A (zh) | 2019-08-13 |
CN110118739B CN110118739B (zh) | 2021-09-10 |
Family
ID=67523835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910487021.3A Active CN110118739B (zh) | 2019-06-05 | 2019-06-05 | 一种玻璃中二价铁和三价铁含量的测定方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110118739B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110501254A (zh) * | 2019-08-14 | 2019-11-26 | 红云红河烟草(集团)有限责任公司 | 一种快速检测梗签中烟丝含量的方法 |
CN110823827A (zh) * | 2019-11-20 | 2020-02-21 | 中南大学 | 一种亚铁离子和铁离子总铁同步测定方法 |
CN112213279A (zh) * | 2020-10-13 | 2021-01-12 | 北京清新环境技术股份有限公司 | 一种脱硝吸收液中铁离子的测定方法 |
CN113029855A (zh) * | 2021-03-12 | 2021-06-25 | 武汉理工大学 | 一种石英晶格杂质元素偏聚分布的分析方法 |
CN114441608A (zh) * | 2021-12-16 | 2022-05-06 | 中国科学院大连化学物理研究所 | 一种金属离子价态分布的检测方法和检测装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1712932A (zh) * | 2004-06-25 | 2005-12-28 | 中国洛阳浮法玻璃集团有限责任公司 | 玻璃中Fe2+和Fe3+含量的测试方法 |
CN1712933A (zh) * | 2004-06-25 | 2005-12-28 | 中国洛阳浮法玻璃集团有限责任公司 | 薄/超薄玻璃中Fe2+和Fe3+含量的测试方法 |
CN101782508A (zh) * | 2010-02-05 | 2010-07-21 | 中国科学院海洋研究所 | 一种海水中亚铁、三价铁及总铁含量的测定方法 |
CN102004084A (zh) * | 2010-11-17 | 2011-04-06 | 武汉理工大学 | 玻璃中亚铁离子及铁离子的含量测定方法 |
CN103267737A (zh) * | 2013-05-13 | 2013-08-28 | 浙江省质量检测科学研究院 | 一种光伏玻璃中微量铁质量含量的快速检测方法 |
CN104237223A (zh) * | 2014-10-08 | 2014-12-24 | 江苏奥赛康药业股份有限公司 | 测定铁-碳水化合物络合物中不稳定铁含量的方法 |
-
2019
- 2019-06-05 CN CN201910487021.3A patent/CN110118739B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1712932A (zh) * | 2004-06-25 | 2005-12-28 | 中国洛阳浮法玻璃集团有限责任公司 | 玻璃中Fe2+和Fe3+含量的测试方法 |
CN1712933A (zh) * | 2004-06-25 | 2005-12-28 | 中国洛阳浮法玻璃集团有限责任公司 | 薄/超薄玻璃中Fe2+和Fe3+含量的测试方法 |
CN101782508A (zh) * | 2010-02-05 | 2010-07-21 | 中国科学院海洋研究所 | 一种海水中亚铁、三价铁及总铁含量的测定方法 |
CN102004084A (zh) * | 2010-11-17 | 2011-04-06 | 武汉理工大学 | 玻璃中亚铁离子及铁离子的含量测定方法 |
CN103267737A (zh) * | 2013-05-13 | 2013-08-28 | 浙江省质量检测科学研究院 | 一种光伏玻璃中微量铁质量含量的快速检测方法 |
CN104237223A (zh) * | 2014-10-08 | 2014-12-24 | 江苏奥赛康药业股份有限公司 | 测定铁-碳水化合物络合物中不稳定铁含量的方法 |
Non-Patent Citations (1)
Title |
---|
华雁芬等: "玻璃中亚铁和总铁的连续测定", 《玻璃与搪瓷》 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110501254A (zh) * | 2019-08-14 | 2019-11-26 | 红云红河烟草(集团)有限责任公司 | 一种快速检测梗签中烟丝含量的方法 |
CN110823827A (zh) * | 2019-11-20 | 2020-02-21 | 中南大学 | 一种亚铁离子和铁离子总铁同步测定方法 |
CN112213279A (zh) * | 2020-10-13 | 2021-01-12 | 北京清新环境技术股份有限公司 | 一种脱硝吸收液中铁离子的测定方法 |
CN113029855A (zh) * | 2021-03-12 | 2021-06-25 | 武汉理工大学 | 一种石英晶格杂质元素偏聚分布的分析方法 |
CN114441608A (zh) * | 2021-12-16 | 2022-05-06 | 中国科学院大连化学物理研究所 | 一种金属离子价态分布的检测方法和检测装置 |
CN114441608B (zh) * | 2021-12-16 | 2023-01-10 | 中国科学院大连化学物理研究所 | 一种金属离子价态分布的检测方法和检测装置 |
Also Published As
Publication number | Publication date |
---|---|
CN110118739B (zh) | 2021-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110118739A (zh) | 一种玻璃中二价铁和三价铁含量的测定方法 | |
CN102539426A (zh) | 硅锰合金中磷的测定方法 | |
CN104034722B (zh) | 一种复合碳化硅中物质含量测定方法 | |
CN110261420A (zh) | X射线荧光光谱法测定蛇纹石化学成分的方法 | |
CN110987918A (zh) | 一种水质总氮的检测试剂及快速检测方法 | |
CN111504982A (zh) | 一种电感耦合等离子体发射光谱法测定玻璃中硼含量的方法 | |
CN102323254A (zh) | 一种自由铀含量的测试方法 | |
CN108776130A (zh) | 一种快速测定钨钼铋锡多金属矿中锡含量方法 | |
CN105699409B (zh) | X射线荧光玻璃熔片法测定重晶石中硫酸钡含量的方法 | |
CN101660995B (zh) | 测定稀土铬锰硅孕育剂中稀土总量的方法 | |
CN105911004A (zh) | 一种采用微波消解-石墨炉原子吸收法测定复合膨松剂中铝含量的方法 | |
CN109187454A (zh) | 一种茶叶中风险物质氟的荧光检测方法 | |
CN100494959C (zh) | X射线奥氏体测量标定试样的制备方法 | |
CN108627472A (zh) | 一种磷酸酯类阻燃剂中总磷含量的检测方法 | |
CN112710650B (zh) | 一种快速准确测定水泥主要化学成分含量的方法 | |
CN107084956A (zh) | 一种基于醇溶剂诱导银纳米簇荧光增强的尿液中碘离子检测方法 | |
CN102445424A (zh) | 一种采用原子吸收光谱法测定电铸镍成型槽液杂质的方法 | |
CN106093097A (zh) | 一种测定烟花爆竹用烟火药剂中锶含量的方法 | |
CN106168586A (zh) | 一种测定烟花爆竹用铁粉中铁含量的方法 | |
CN110567904A (zh) | 分光光度法测定尿素中硫酸盐含量的方法 | |
CN112129744A (zh) | 一种矿石中锂的化学物相分析方法 | |
CN110333228A (zh) | 抗多种金属离子干扰且试剂无毒的在线自动测总砷的方法 | |
CN107167438A (zh) | 一种常量钴的分光光度测定方法 | |
CN102023159B (zh) | 三聚氰胺试纸及其制备方法以及三聚氰胺的检测方法 | |
CN109444198A (zh) | 适用于膨润土、粘土化学成分的快速测定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20201204 Address after: No. 498, Wenwu West Road, economic development zone, Mianyang City, Sichuan Province Applicant after: Mianyang Junwei Technology Co.,Ltd. Address before: 621099 Sichuan city in Mianyang Province Economic Development Zone No. 177 North Road Fu Applicant before: SICHUAN XUHONG OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Applicant before: DONGXU OPTOELECTRONIC TECHNOLOGY Co.,Ltd. |
|
TA01 | Transfer of patent application right | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190813 Assignee: Hebei Guangyang Electronic Technology Co.,Ltd. Assignor: Mianyang Junwei Technology Co.,Ltd. Contract record no.: X2021990000019 Denomination of invention: A method for determining the content of Fe2 + and Fe3 + in glass License type: Common License Record date: 20210111 Application publication date: 20190813 Assignee: Henan Xuyang Photoelectric Technology Co.,Ltd. Assignor: Mianyang Junwei Technology Co.,Ltd. Contract record no.: X2021990000020 Denomination of invention: A method for determining the content of Fe2 + and Fe3 + in glass License type: Common License Record date: 20210111 |
|
EE01 | Entry into force of recordation of patent licensing contract | ||
EE01 | Entry into force of recordation of patent licensing contract | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190813 Assignee: Hebei Guangxing Semiconductor Technology Co.,Ltd. Assignor: Mianyang Junwei Technology Co.,Ltd. Contract record no.: X2021980001111 Denomination of invention: A method for determining the content of Fe2 + and Fe3 + in glass License type: Common License Record date: 20210207 |
|
TA01 | Transfer of patent application right |
Effective date of registration: 20210301 Address after: 621000 No. 177, north section of Fubin Road, economic development zone, Mianyang City, Sichuan Province Applicant after: Sichuan Hongke Innovation Technology Co.,Ltd. Address before: No. 498, Wenwu West Road, economic development zone, Mianyang City, Sichuan Province Applicant before: Mianyang Junwei Technology Co.,Ltd. |
|
TA01 | Transfer of patent application right | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190813 Assignee: Hunan Xinghuai New Material Technology Co.,Ltd. Assignor: Sichuan Hongke Innovation Technology Co.,Ltd. Contract record no.: X2022110000011 Denomination of invention: A method for determining the content of divalent iron and trivalent iron in glass Granted publication date: 20210910 License type: Common License Record date: 20220328 |
|
EE01 | Entry into force of recordation of patent licensing contract | ||
EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Hunan Xinghuai New Material Technology Co.,Ltd. Assignor: Sichuan Hongke Innovation Technology Co.,Ltd. Contract record no.: X2022110000011 Date of cancellation: 20220704 |
|
EC01 | Cancellation of recordation of patent licensing contract |