CN110959897A - Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof - Google Patents
Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof Download PDFInfo
- Publication number
- CN110959897A CN110959897A CN201811125761.4A CN201811125761A CN110959897A CN 110959897 A CN110959897 A CN 110959897A CN 201811125761 A CN201811125761 A CN 201811125761A CN 110959897 A CN110959897 A CN 110959897A
- Authority
- CN
- China
- Prior art keywords
- tobacco
- raw material
- solvent
- functional
- electronic cigarette
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
- A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
- A24B15/26—Use of organic solvents for extraction
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention relates to the field of electronic cigarettes. A mixed tobacco fragrance type tobacco shred functional aromatic raw material is prepared by carrying out high-pressure low-temperature reaction on various tobacco shreds under inert conditions, and then extracting and filtering the tobacco shreds by using a solvent; or the tobacco shred functional aromatic raw material is prepared by immersing a plurality of tobacco shreds in a solvent, then performing high-pressure low-temperature reaction under inert conditions, and then extracting and filtering; or soaking various cut tobaccos in a solvent for 15-30 s, then carrying out high-pressure low-temperature reaction under inert conditions, and then extracting and filtering the cut tobaccos by using the solvent. The high-pressure low-temperature reaction can obtain 100-plus 200-DEG C reaction products, which are expressed by the fact that the tobacco fragrance is enough, the burnt fragrance is moderate, the gas of the generated smoke is light, the compatibility is good, the requirement of the main body fragrance of the electronic cigarette liquid can be met, in addition, the extraction method uses propylene glycol or glycerin as a solvent, the stability is good, the refrigeration is not needed, the reaction condition is simple, the products in batches have no obvious difference, and the industrial production can be realized.
Description
Technical Field
The invention relates to the field of electronic cigarettes.
Background
Smoking is harmful to health, second-hand smoke is more harmful, secondary pollution and public hazard are formed, so smoke-free tobacco products need to be researched and developed urgently, and novel tobacco products such as electronic cigarettes, heating non-combustible tobacco products, buccal cigarettes and the like become focus of attention in domestic and foreign industries. The combustion process of tobacco has complex reactions such as thermal cracking, Maillard and the like, and different temperatures and atmospheres have great influence on products. Research shows that the types of aroma components released by tobacco are the most when the tobacco is heated to 600 ℃, however, the smoking process of the novel tobacco forms such as electronic cigarettes and heating non-combustion cigarettes cannot reach the heating temperature, so that the tobacco essential oil extracted by the traditional tobacco processing mode cannot bring corresponding satisfaction to consumers when being applied to the novel tobacco, and the novel tobacco forms such as electronic cigarettes and the like cannot bring obstruction to market and replace the traditional cigarette consumption mode.
The applicant Zhejiang tobacco industry Limited liability company applies for Chinese invention patent (CN201510580910.6) and discloses a method for preparing electronic cigarette tobacco juice from tobacco subjected to dry distillation pyrolysis treatment, which comprises the following steps: weighing tobacco, placing the tobacco into a heating furnace, heating to the temperature of 150-.
Chinese invention patent (CN201510246335.6) discloses an electronic cigarette liquid containing dry distillation spice, which is prepared by uniformly mixing 15-50% of dry distillation spice, 30-60% of glycerol and propylene glycol. Wherein, the dry distillation spice is prepared by dry distillation of tobacco under nitrogen atmosphere and at proper temperature. The dry distillation is to dry distill the tobacco at 200-400 ℃ in nitrogen atmosphere, and the distillate flows into a receiving bottle through tap water condensation and is collected, thus obtaining the condensed dry distillation spice.
Chinese invention patent (CN201610086584.8) discloses an electronic cigarette liquid with traditional cigarette fragrance and a preparation method thereof, which comprises the steps of burning and dry distillation of cut tobacco. The combustion of the tobacco shreds is carried out at the temperature of 800-900 ℃ to obtain fully combusted smoke. The dry distillation of the tobacco shreds is carried out at the temperature of 300-400 ℃ to obtain the dry-distilled smoke. The burning smoke and the smoke of the dry distillation react at the temperature of 300 ℃ and 400 ℃, and are dissolved in organic solvents such as ethyl acetate and the like. And (3) carrying out rotary evaporation on the solvent absorption liquid at the temperature of 27-30 ℃ under the pressure of-0.09 MPa to obtain a brown oily extract, namely the tobacco liquid raw material with the aroma characteristics of the traditional flue-cured tobacco type cigarettes.
The Chinese invention patent (CN201410249421.8) discloses a method for extracting Chinese style flue-cured tobacco flavor type tobacco juice for electronic cigarettes, which comprises the following steps: mixing flue-cured tobacco type tobacco leaves, tobacco shreds or tobacco powder, applying tobacco material liquid or sugar-containing substances to the tobacco leaves, the tobacco shreds or the tobacco powder, performing dry distillation on the substances in the step 2) in temperature sections, and collecting fractions. The method specifically comprises the following steps: 1) 70-100 parts of flue-cured tobacco type tobacco leaves, tobacco shreds or tobacco powder, 1-5 parts of tobacco feed liquid or 1-30 parts of substances containing sugar are filled into a dry distillation tank; 2) heating the retort to 60-120 deg.C, and maintaining the temperature for 0.5-2 h; 3) then raising the temperature to 180-240 ℃, and preserving the temperature for 0.5-2 h; 4) and collecting fractions after the reaction is finished.
Disclosure of Invention
In order to overcome the defects of the existing tobacco processing mode applied to novel tobacco and make up the defects of the existing electronic cigarette liquid such as insufficient tobacco fragrance and physiological strength, the invention aims to provide a tobacco shred functional fragrance raw material with mixed tobacco fragrance, and the second aim of the invention is to adopt the electronic cigarette liquid and the electronic cigarette of the tobacco shred functional fragrance raw material.
In order to achieve the first object, the invention adopts the following technical scheme:
a mixed tobacco fragrance type tobacco shred functional aromatic raw material is prepared by performing high-pressure low-temperature reaction on tobacco shreds under inert conditions, and extracting and filtering by a solvent; or the tobacco shred functional aromatic raw material is prepared by immersing tobacco shreds in a solvent, then performing high-pressure low-temperature reaction under inert conditions, and then extracting and filtering; or soaking the cut tobacco in a solvent for 15-30 s, then carrying out high-pressure low-temperature reaction under an inert condition, and then extracting and filtering the reaction product by using the solvent to obtain the cut tobacco; the conditions of high pressure and low temperature are 1.0-2.0 MPa, the temperature is 90-140 ℃, and the reaction time is 0.5-5 h; the solvent is one or a mixture of two or three of ethanol, glycerol and propylene glycol; the cut tobacco comprises the following components in percentage by mass:
as a further improvement, the cut tobacco comprises the following components in percentage by mass:
as a further improvement, the conditions of high pressure and low temperature are 1.2-1.80 MPa, the temperature is 100-120 ℃, and the reaction time is 1-3 h.
As a further improvement, the inert condition is nitrogen or inert gas.
As a further improvement, the cut tobacco is one or a mixture of more of flue-cured tobacco cut tobacco, aromatic tobacco cut tobacco, sun-cured yellow tobacco cut tobacco, burley tobacco cut tobacco, middle-flavor cut tobacco, strong-flavor cut tobacco and fen-flavor cut tobacco.
In order to achieve the second object, the invention adopts the following technical scheme:
the electronic cigarette liquid with the tobacco flavor comprises the tobacco shred functional fragrant raw material.
Preferably, the electronic cigarette liquid comprises the following components in percentage by mass:
preferably, the non-tobacco plant extract comprises one or more of plum extract and tea extract; the electronic cigarette solvent is one or a mixture of two of glycerin and propylene glycol. Preferably, the electronic cigarette solvent is one or a mixture of two of glycerin and propylene glycol.
A tobacco-flavored electronic cigarette comprises a tobacco juice of the electronic cigarette.
In the prior art, the dry distillation extract has high temperature, is generally extracted at 350 ℃, and is too heavy in burnt flavor when applied to electronic cigarettes, so that the dry distillation extract cannot be used for electronic cigarette liquid main body fragrance with the herbal fragrance type. The supercritical extract is generally extracted at the temperature of below 50 ℃, and the cigarette smoke generated by the extract is heavy and has a slight residual feeling. The high-pressure low-temperature reaction can obtain 100-plus 200-DEG C reaction products, which are expressed by the fact that the tobacco fragrance is enough, the burnt fragrance is moderate, the gas of the generated smoke is light, the compatibility is good, the requirement of the main body fragrance of the electronic cigarette liquid can be met, in addition, the extraction method uses propylene glycol or glycerin as a solvent, the stability is good, the refrigeration is not needed, the reaction condition is simple, the products in batches have no obvious difference, and the industrial production can be realized.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the functional fragrant raw material provided by the invention can endow the electronic cigarette smoke with obvious tobacco flavor characteristics, has rich fragrance, comfortable and clean mouthfeel and moderate strength, and greatly improves the sensory quality, so that the market acceptance of the tobacco-flavor electronic cigarette is favorably improved.
2. The functional incense raw material provided by the invention has stable property and strong pertinence.
3. The electronic cigarette solvent has good compatibility with one or a mixture of two or three of ethanol, glycerol and propylene glycol, does not need additional treatment, and is convenient to use and simple in production process.
Drawings
FIG. 1 is a gas chromatogram of a flue-cured tobacco-type functional flavor raw material of example 1.
FIG. 2 is a gas chromatogram of a raw material of a cigarette-type functional incense of example 2.
FIG. 3 is a gas chromatogram of a functional cigarette raw material of burley tobacco of example 3.
Detailed Description
The invention is further described below with reference to examples of embodiment but without in any way limiting the scope of the invention.
Example 1
Weighing 11.5g of flue-cured tobacco shred, 9.5g of burley tobacco shred, 6.2g of middle-flavor tobacco shred, 3.0g of strong-flavor tobacco shred and 3.0g of fen-flavor tobacco shred, adding the mixture into a reaction kettle with the volume of 500mL, adding 1.5MPa of nitrogen, heating at 100 ℃, electrically stirring, heating for 2 hours (including 1 hour of heating time), cooling by circulating water after the reaction is finished, adding 100mL of propylene glycol, immersing overnight, extracting and filtering to obtain about 80mL of filtrate.
The cigarette is prepared by adding the functional cigarette raw material, and the electronic cigarette has the advantages of obvious tobacco flavor characteristic, rich aroma, comfortable and clean taste and moderate strength, and greatly improves the sensory quality.
Example 2
Weighing 6.5g of flue-cured tobacco shreds, 10.5g of burley tobacco shreds, 6.5g of middle-flavor tobacco shreds, 1.0g of strong-flavor tobacco shreds and 2.0g of faint-flavor tobacco shreds, shredding by hands, adding into a reaction kettle with the volume of 500mL, adding a solvent for immersing about 200mL, adding 1.5MPa of nitrogen, heating at 100 ℃ for 2h (including 1h of heating time), cooling with circulating water after the reaction is finished, standing overnight, and filtering to obtain about 120mL of filtrate.
The cigarette is prepared by adding the functional cigarette raw material, and the electronic cigarette has the advantages of obvious tobacco flavor characteristic, rich aroma, comfortable and clean taste and moderate strength, and greatly improves the sensory quality.
Example 3
Weighing 10.5g of flue-cured tobacco shred, 10.5g of burley tobacco shred, 6.5g of middle-aroma type tobacco shred, 2.0g of strong-aroma type tobacco shred and 3.0g of fen-aroma type tobacco shred, soaking the tobacco shred in propylene glycol for about 20s, taking out the tobacco shred and adding the tobacco shred into a reaction kettle with the volume of 500mL, adding 1.5MPa of nitrogen, heating at 100 ℃ for 2h (including 1h of temperature rise time), cooling by circulating water after the reaction is finished, adding a solvent to immerse overnight, and filtering to obtain 80-100mL of filtrate.
The cigarette is prepared by adding the functional cigarette raw material, and the electronic cigarette has the advantages of obvious tobacco flavor characteristic, rich aroma, comfortable and clean taste and moderate strength, and greatly improves the sensory quality.
Example 4
The formula of the electronic cigarette liquid comprises the following components in percentage by mass:
the functional flavor raw material of the tobacco shreds can be selected from one of the embodiments 1 to 3.
The electronic cigarette liquid with the composition enters an electronic cigarette empty smoke tube, and evaluation results show that after the functional tobacco shred fragrance raw material is added, the electronic cigarette smoke has obvious tobacco flavor characteristics, the tobacco has rich natural fragrance, full smoke, good fragrance quality, no obvious sweet and greasy feeling, moderate stiffness and clean and comfortable oral cavity, and the sensory quality is obviously improved.
The low-temperature non-combustion fumes obtained in examples 1 to 4 were subjected to smoking evaluation.
The criteria for evaluation are as follows:
the results are as follows:
| flue-cured tobacco | 27.0 | 9.0 | 9.0 | 18.0 | 18.0 | 6.0 |
| White rib | 26.0 | 7.0 | 7.0 | 16.0 | 16.0 | 6.5 |
| Perfume | 27.0 | 8.5 | 8.0 | 18.0 | 17.0 | 6.0 |
| Example 4 | 28.0 | 9.0 | 9.0 | 17.5 | 18.5 | 9.0 |
Claims (8)
1. A tobacco shred functional aromatic raw material with mixed tobacco aroma is characterized in that: the functional fragrant raw material of the tobacco shreds is prepared by carrying out high-pressure low-temperature reaction on the tobacco shreds under inert conditions, and then extracting and filtering the tobacco shreds by using a solvent; or the tobacco shred functional aromatic raw material is prepared by immersing tobacco shreds in a solvent, then performing high-pressure low-temperature reaction under inert conditions, and then extracting and filtering; or soaking the cut tobacco in a solvent for 15-30 s, then carrying out high-pressure low-temperature reaction under an inert condition, and then extracting and filtering the reaction product by using the solvent to obtain the cut tobacco; the conditions of high pressure and low temperature are 1.0-2.0 MPa, the temperature is 90-140 ℃, and the reaction time is 0.5-5 h; the solvent is one or a mixture of two or three of ethanol, glycerol and propylene glycol; the cut tobacco comprises the following components in percentage by mass:
2. the functional tobacco shred raw material with mixed tobacco flavor according to claim 1, wherein the functional tobacco shred raw material is characterized in that: the cut tobacco comprises the following components in percentage by mass:
3. the functional tobacco shred raw material with mixed tobacco flavor according to claim 1, wherein the functional tobacco shred raw material is characterized in that: the conditions of high pressure and low temperature are 1.2-1.80 MPa, the temperature is 100-120 ℃, and the reaction time is 1-3 h.
4. The functional tobacco shred raw material with mixed tobacco flavor according to claim 1, wherein the functional tobacco shred raw material is characterized in that: the inert condition is nitrogen or inert gas.
5. The utility model provides a tobacco flavor electron cigarette tobacco juice which characterized in that: the electronic cigarette liquid comprises the tobacco shred functional perfume raw material according to any one of claims 1 to 4.
6. The tobacco-flavored electronic cigarette liquid according to claim 5, characterized in that the electronic cigarette liquid comprises the following components in percentage by mass:
7. the tobacco-flavored e-cigarette liquid of claim 6, wherein the non-tobacco plant extract comprises a mixture of one or more of plum extract, tea extract; the electronic cigarette solvent is one or a mixture of two of glycerin and propylene glycol.
8. A tobacco flavor electronic cigarette is characterized in that: the tobacco flavor electronic cigarette liquid of claims 5-7 is adopted as the tobacco liquid of the electronic cigarette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125761.4A CN110959897A (en) | 2018-09-26 | 2018-09-26 | Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125761.4A CN110959897A (en) | 2018-09-26 | 2018-09-26 | Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110959897A true CN110959897A (en) | 2020-04-07 |
Family
ID=70026449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125761.4A Pending CN110959897A (en) | 2018-09-26 | 2018-09-26 | Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110959897A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302863A (en) * | 1928-03-19 | 1928-12-27 | Basile Seferiadis | Process and device for extracting essential principles or gums from tobaccos of all kinds |
| CN101061888A (en) * | 2006-04-27 | 2007-10-31 | 湖南中烟工业公司 | Device for carbonization and cracking at high temperature and the pyrolysis method |
| CN104026728A (en) * | 2014-06-25 | 2014-09-10 | 湖南中烟工业有限责任公司 | Electronic tobacco juice with baking aroma |
| CN104757704A (en) * | 2014-12-31 | 2015-07-08 | 贵州中烟工业有限责任公司 | Preparation method for tobacco extract and composition with the tobacco extract |
| CN104921287A (en) * | 2015-06-05 | 2015-09-23 | 浙江中烟工业有限责任公司 | Tobacco extract and preparing method and application thereof |
| CN105595411A (en) * | 2016-02-01 | 2016-05-25 | 湖北中烟工业有限责任公司 | Method for preparing tobacco-characteristic-taste tobacco flavor material and electronic cigarette fluid containing tobacco flavor material |
| CN106387989A (en) * | 2016-11-18 | 2017-02-15 | 镇江市水木年华现代农业科技有限公司 | Contain tea leaf extract and Chinese medicine extract electronic cigarette oil and preparation method thereof |
-
2018
- 2018-09-26 CN CN201811125761.4A patent/CN110959897A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302863A (en) * | 1928-03-19 | 1928-12-27 | Basile Seferiadis | Process and device for extracting essential principles or gums from tobaccos of all kinds |
| CN101061888A (en) * | 2006-04-27 | 2007-10-31 | 湖南中烟工业公司 | Device for carbonization and cracking at high temperature and the pyrolysis method |
| CN104026728A (en) * | 2014-06-25 | 2014-09-10 | 湖南中烟工业有限责任公司 | Electronic tobacco juice with baking aroma |
| CN104757704A (en) * | 2014-12-31 | 2015-07-08 | 贵州中烟工业有限责任公司 | Preparation method for tobacco extract and composition with the tobacco extract |
| CN104921287A (en) * | 2015-06-05 | 2015-09-23 | 浙江中烟工业有限责任公司 | Tobacco extract and preparing method and application thereof |
| CN105595411A (en) * | 2016-02-01 | 2016-05-25 | 湖北中烟工业有限责任公司 | Method for preparing tobacco-characteristic-taste tobacco flavor material and electronic cigarette fluid containing tobacco flavor material |
| CN106387989A (en) * | 2016-11-18 | 2017-02-15 | 镇江市水木年华现代农业科技有限公司 | Contain tea leaf extract and Chinese medicine extract electronic cigarette oil and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 马爱霞等: "《药品GMP车间实训教程上册》", 30 June 2016, 中国医药科技出版社 * |
| 高锦明等: "《天然产品加工工艺学》", 31 March 2018, 西北农林科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103124501B (en) | Harmless cigarette made by tobacco | |
| CN101548797B (en) | Cigarette and preparation method thereof | |
| CN105167170A (en) | Method for preparing electronic cigarette nicotine liquid by means of tobacco subjected to dry distillation pyrolysis | |
| CN102813278A (en) | Mixed electronic cigarette tobacco liquid | |
| CN104041935A (en) | Method for extracting Chinese-style flue-cured tobacco fragrance cigarette juice for electronic cigarette | |
| CN104983064A (en) | Electronic cigarette liquid and preparation method thereof | |
| CN110771947B (en) | Spice functional module for cigarette thickening and increasing | |
| CN110283662B (en) | Ice-feeling tea-flavored essence and application thereof | |
| CN110959894A (en) | Tobacco-flavored tobacco shred functional spice composition and preparation method and application thereof | |
| CN110839947B (en) | Extraction process of plant spice for cigarette without burning under heating | |
| CN105038989A (en) | Method for preparing tobacco flavor by taking glycerol triacetate as extractant | |
| CN105077570B (en) | A kind of tobacco leaf extract pyrolysis product, its preparation method and its application | |
| CN110236231B (en) | Preparation method of electronic cigarette oil combining microwave pyrolysis and molecular distillation | |
| CN110959902A (en) | Cigarette with tobacco fragrance type tobacco shred function fragrance raw material mixed and capable of being heated and not combusted | |
| CN110959896A (en) | Tobacco shred added with functional fragrant raw material and heating non-combustible cigarette | |
| CN108998241B (en) | Cured flue-cured tobacco flavor essence for heating non-combustible cigarettes and preparation method and application thereof | |
| CN109259296B (en) | Electronic cigarette oil with tea baking fragrance and preparation method and application thereof | |
| CN110959891A (en) | Method for preparing functional tobacco shred fragrance raw material through immersion high-pressure low-temperature reaction | |
| CN110295088B (en) | Cumquat-flavored essence and application thereof | |
| KR101332596B1 (en) | Manufacturing method of electronic cigarette liquid | |
| CN111718797A (en) | Method for finely extracting tobacco essence | |
| CN110959897A (en) | Tobacco shred functional aromatic raw material with mixed tobacco aroma and application thereof | |
| CN110959889A (en) | Functional fragrant raw material of tobacco-flavored cut tobacco and application of functional fragrant raw material | |
| CN110946331A (en) | Heating non-combustion cigarette adopting tobacco-flavored cut tobacco functional incense raw materials | |
| CN110959890A (en) | Preparation method of tobacco flavor electronic cigarette tobacco shred functional incense raw material |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |