CN106631436A - Alga-based organic slow-release compound fertilizer - Google Patents

Alga-based organic slow-release compound fertilizer Download PDF

Info

Publication number
CN106631436A
CN106631436A CN201611157510.5A CN201611157510A CN106631436A CN 106631436 A CN106631436 A CN 106631436A CN 201611157510 A CN201611157510 A CN 201611157510A CN 106631436 A CN106631436 A CN 106631436A
Authority
CN
China
Prior art keywords
fertilizer
marine alga
compound fertilizer
nitrogen
alga
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.)
Withdrawn
Application number
CN201611157510.5A
Other languages
Chinese (zh)
Inventor
陈勇
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.)
Anhui tengtuo new Mstar Technology Ltd
Original Assignee
Qingyang County Lennon Fertilizer Ltd Co
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
Application filed by Qingyang County Lennon Fertilizer Ltd Co filed Critical Qingyang County Lennon Fertilizer Ltd Co
Priority to CN201611157510.5A priority Critical patent/CN106631436A/en
Publication of CN106631436A publication Critical patent/CN106631436A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05BPHOSPHATIC FERTILISERS
    • C05B7/00Fertilisers based essentially on alkali or ammonium orthophosphates
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80Soil conditioners
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00Fertilisers characterised by their form
    • C05G5/10Solid or semi-solid fertilisers, e.g. powders
    • C05G5/12Granules or flakes

Abstract

The invention relates to an alga-based organic slow-release compound fertilizer which comprises the following components: 1-3% of alga, 1-3% of tobacco dust, 2-5% of plant ash, 1-5% of fulvic acid, 0.1-0.5% of azotobacter, 15-35% of isobutydine-diurea-coated urea, 2-8% of isobutydine-diurea-coated ammonium dihydrogen phosphate, 1-5% of nitrogen-pyridine, 0.1-0.5% of triacontanol, 0.1-0.5% of 2-diethyl aminoethyl hexanoate, 0.1-0.5% of sodium indolebutyrate and the balance of pulverized straw. The alga is used as an organic matter fertilizer and corrosion inhibitor; the plant fibers and lignin in the tobacco dust are utilized to provide organic fertilizers; the plant ash provides a potash fertilizer and minor elements for the compound fertilizer; the fulvic acid enhances the effects of the fertilizer, improves the soil, stimulates the plant growth and improves the agricultural product quality; the azotobacter performs the nitrogen fixing function; the urea is coated in the isobutydine diurea to have the slow-release effect; the ammonium dihydrogen phosphate is coated in the isobutydine diurea to have the slow-release effect; the nitrogen-pyridine performs the function of nitrogen fixation; and the combination of the triacontanol, 2-diethyl aminoethyl hexanoate and sodium indolebutyrate is used as a growth regulator. The alga-based organic slow-release compound fertilizer belongs to a base fertilizer.

Description

A kind of organic slow-release compound fertilizer based on marine alga
Technical field
The present invention relates to a kind of fertilizer, more particularly to a kind of organic slow-release compound fertilizer and its production work based on marine alga Skill.
Background technology
The current fertilizer of China is mainly the mixing of a great number of elements, middle trace element and additive, and micronutrient levels is few, And available in non-time-release fertilizer, fertilizer efficiency is poor, and accommodation is narrower, adapts to crop species also limited.In recent years, as composite fertilizer is in production On application amount be continuously increased, the producting proportion of composite fertilizer is unreasonable, and the use un-reasonable phenomenon of composite fertilizer is increasingly highlighted, Occur in that compound fertilizer production cost is high, fertilization effect is undesirable, and particularly slow release effect is undesirable.
The content of the invention
It is an object of the invention to provide a kind of organic slow-release compound fertilizer based on marine alga, is carried out by fertilizer ratio aspect Improve, while fertilizer efficiency is improved, increase fertilizer slow release effect.
The technical scheme is that:A kind of organic slow-release compound fertilizer based on marine alga, including following components:Marine alga 1%-3%, one side organic fertilizer promotes plant growth, certain suction-operated is played in addition so that fertilizer efficiency is sustained; Cigarette foam 1%-3%, using string and lignin in cigarette foam, there is provided organic fertilizer;Plant ash 2%-5%, is composite fertilizer Material provides potash fertilizer and trace element;Fulvic acid 1%-5%, makes fertilizer synergistic, improved soil, stimulates plant growth, improves agricultural production Quality;Nitrogen-fixing bacteria 0.1%-0.5%, plays a part of fixed nitrogen, reduces the loss of nitrogenous fertilizer, strengthens fertilizer efficiency;IBDU bag Urea 15%-35% is covered, IBDU is a kind of covering material, and urea plays slow release effect in being covered by, in addition, also Adsorbed with marine alga, urea is adsorbed on the basis of being wrapped by by marine alga, and slow release effect is more preferably obvious;Isobutyl fork two Urea coats ammonium dihydrogen phosphate 2%-8%, and IBDU is a kind of covering material, and ammonium dihydrogen phosphate plays slow in being covered by Effect is released, in addition, also being adsorbed with marine alga, ammonium dihydrogen phosphate is adsorbed on the basis of being wrapped by by marine alga, sustained release effect Fruit is more preferably obvious;Nitrogen-pyridine 1%-5%, plays a part of fixed nitrogen, reduces the loss of nitrogenous fertilizer, strengthens fertilizer efficiency;Triacontanol 0.1%-0.5%;Amine fresh fat 0.1%-0.5%;Indolebutyric acid sodium 0.1%-0.5%, triacontanol, amine fresh fat and indolebutyric acid Used as growth regulator, its mass ratio is 1 for sodium triplicity:2:1;Remaining is the stalk crushed, and belongs to the basis of the present invention Fertilizer, not only contributes to recycling economy, also helps the consumption for reducing conventional fertilizers so that soil is rehabilitated.
Preferably, the marine alga particle diameter is 3-50 microns, and the particle size range so that organosilicon has strong adsorptivity will be urinated The available fertilizers such as element are adsorbed, and realize efficiency slow release.
Preferably, the cigarette foam particle diameter is 3-50 microns, and the particle size range contributes to fully absorbing for fertilizer.
Preferably, the stalk is at least one in straw, cornstalk, rice straw, and its particle diameter is 3-50 microns, belongs to this The base fertilizer of invention, not only contributes to recycling economy, also helps the consumption for reducing conventional fertilizers so that soil is recuperated Live.
For the fertilizer efficiency for further improving compound fertilizer, the present invention also provides a kind of organic slow-release compound fertilizer based on marine alga Production technology, comprise the following steps:Get the raw materials ready, prepare the raw material required for compound fertilizer;Marine alga is crushed to into 3-50 microns Fine particle, crush speed and be not higher than 300r/min, it is standby, on the one hand, the particle size range so that marine alga has strong absorption Property, the available fertilizers such as urea are adsorbed, realize efficiency slow release, on the other hand, it is unsuitable too high to crush speed, be in order to avoid The microcellular structure of destruction marine alga, improves adsorptivity;It is standby by crushed stalk to 3-50 microns, belong to the base fertilizer of the present invention, Recycling economy is not only contributed to, the consumption for reducing conventional fertilizers is also helped so that soil is rehabilitated;Cigarette foam is crushed Standby to 3-50 microns, the particle size range is easy to cigarette foam absorbed by crops;By the marine alga got ready, cigarette foam, plant ash, fulvic acid, Nitrogen-fixing bacteria, IBDU cladding urea, IBDU cladding ammonium dihydrogen phosphate, nitrogen-pyridine, triacontanol, amine fresh fat, Yin Diindyl sodium butyrate, the stalk crushed stir;Granulation, by the compound fertilizer for stirring the particle of 1-3mm diameters is caused, and is easy to Fertilising.
Specific embodiment
Below in conjunction with specific embodiment, technical scheme is elaborated, it should be understood that these embodiments are only For illustrating the present invention rather than limiting the scope of the present invention, after the present invention has been read, those skilled in the art are to this The modification of the various equivalent form of values of invention is each fallen within the application claims limited range.
Embodiment 1
A kind of organic slow-release compound fertilizer based on marine alga, including following components:Marine alga 1%, one side organic fertilizer, Promote plant growth, certain suction-operated is played in addition so that fertilizer efficiency is sustained;Cigarette foam 1%, it is fine using the plant in cigarette foam Peacekeeping lignin, there is provided organic fertilizer;Plant ash 2%, for compound fertilizer potash fertilizer and trace element are provided;Fulvic acid 1%, makes fertilizer Expect synergy, improved soil, stimulate plant growth, improve agricultural product quality;Nitrogen-fixing bacteria 0.1%, play a part of fixed nitrogen, reduce nitrogen The loss of fertilizer, strengthens fertilizer efficiency;IBDU coats urea 15%, and IBDU is a kind of covering material, and urea is wrapped by Including, slow release effect is played, in addition, also being adsorbed with marine alga, urea is adsorbed on the basis of being wrapped by by marine alga, Slow release effect is more preferably obvious;IBDU coat ammonium dihydrogen phosphate 2%, IBDU be a kind of covering material, di(2-ethylhexyl)phosphate In hydrogen ammonium is covered by, play slow release effect, in addition, also adsorbed with marine alga, ammonium dihydrogen phosphate on the basis of being wrapped by, Adsorbed by marine alga, slow release effect is more preferably obvious;Nitrogen-pyridine 1%, plays a part of fixed nitrogen, reduces the loss of nitrogenous fertilizer, strengthens Fertilizer efficiency;Triacontanol 0.1%;Amine fresh fat 0.1%;Indolebutyric acid sodium 0.1%, triacontanol, amine fresh fat and indolebutyric acid sodium three Person is combined as growth regulator, and its mass ratio is 1:2:1;Remaining is the stalk crushed, and belongs to the base fertilizer of the present invention, Recycling economy is not only contributed to, the consumption for reducing conventional fertilizers is also helped so that soil is rehabilitated.
Preferably, the marine alga particle diameter is 3 microns, particle size range so that organosilicon has strong adsorptivity, by urea etc. Available fertilizer is adsorbed, and realizes efficiency slow release.
Preferably, the cigarette foam particle diameter is 3 microns, and the particle size range contributes to fully absorbing for fertilizer.
Preferably, the stalk is at least one in straw, cornstalk, rice straw, and its particle diameter is 3 microns, belongs to this Bright base fertilizer, not only contributes to recycling economy, also helps the consumption for reducing conventional fertilizers so that soil is able to recuperation life Breath.
For the fertilizer efficiency for further improving compound fertilizer, the present invention also provides a kind of organic slow-release compound fertilizer based on marine alga Production technology, comprise the following steps:Get the raw materials ready, prepare the raw material required for compound fertilizer;Marine alga is crushed to into 3-50 microns Fine particle, crushing speed be 100r/min, it is standby, on the one hand, the particle size range so that marine alga has strong adsorptivity, will The available fertilizers such as urea are adsorbed, and realize efficiency slow release, and on the other hand, crushing speed should not be too high, is in order to avoid destruction The microcellular structure of marine alga, improves adsorptivity;It is standby by crushed stalk to 3 microns, belong to the base fertilizer of the present invention, do not only have Beneficial to recycling economy, the consumption for reducing conventional fertilizers is also helped so that soil is rehabilitated;Cigarette foam is crushed to into 3 micro- Rice, standby, the particle size range is easy to cigarette foam absorbed by crops;By the marine alga got ready, cigarette foam, plant ash, fulvic acid, nitrogen-fixing bacteria, IBDU cladding urea, IBDU cladding ammonium dihydrogen phosphate, nitrogen-pyridine, triacontanol, amine fresh fat, indolebutyric acid Sodium, the stalk crushed stir;Granulation, by the compound fertilizer for stirring the particle of 1mm diameters is caused, and is easy to fertilising.
Embodiment 2
A kind of organic slow-release compound fertilizer based on marine alga, including following components:Marine alga 3%, one side organic fertilizer, Promote plant growth, certain suction-operated is played in addition so that fertilizer efficiency is sustained;Cigarette foam 3%, it is fine using the plant in cigarette foam Peacekeeping lignin, there is provided organic fertilizer;Plant ash 5%, for compound fertilizer potash fertilizer and trace element are provided;Fulvic acid 5%, makes fertilizer Expect synergy, improved soil, stimulate plant growth, improve agricultural product quality;Nitrogen-fixing bacteria 0.5%, play a part of fixed nitrogen, reduce nitrogen The loss of fertilizer, strengthens fertilizer efficiency;IBDU coats urea 35%, and IBDU is a kind of covering material, and urea is wrapped by Including, slow release effect is played, in addition, also being adsorbed with marine alga, urea is adsorbed on the basis of being wrapped by by marine alga, Slow release effect is more preferably obvious;IBDU coat ammonium dihydrogen phosphate 8%, IBDU be a kind of covering material, di(2-ethylhexyl)phosphate In hydrogen ammonium is covered by, play slow release effect, in addition, also adsorbed with marine alga, ammonium dihydrogen phosphate on the basis of being wrapped by, Adsorbed by marine alga, slow release effect is more preferably obvious;Nitrogen-pyridine 5%, plays a part of fixed nitrogen, reduces the loss of nitrogenous fertilizer, strengthens Fertilizer efficiency;Triacontanol 0.5%;Amine fresh fat 0.5%;Indolebutyric acid sodium 0.5%, triacontanol, amine fresh fat and indolebutyric acid sodium three Person is combined as growth regulator, and its mass ratio is 1:2:1;Remaining is the stalk crushed, and belongs to the base fertilizer of the present invention, Recycling economy is not only contributed to, the consumption for reducing conventional fertilizers is also helped so that soil is rehabilitated.
Preferably, the marine alga particle diameter is 50 microns, particle size range so that organosilicon has strong adsorptivity, by urea Adsorbed Deng available fertilizer, realized efficiency slow release.
Preferably, the cigarette foam particle diameter is 50 microns, and the particle size range contributes to fully absorbing for fertilizer.
Preferably, the stalk is at least one in straw, cornstalk, rice straw, and its particle diameter is 50 microns, belongs to this Bright base fertilizer, not only contributes to recycling economy, also helps the consumption for reducing conventional fertilizers so that soil is able to recuperation life Breath.
For the fertilizer efficiency for further improving compound fertilizer, the present invention also provides a kind of organic slow-release compound fertilizer based on marine alga Production technology, comprise the following steps:Get the raw materials ready, prepare the raw material required for compound fertilizer;Marine alga is crushed to into 50 microns Fine particle, crushing speed is 300r/min, standby, on the one hand, the particle size range so that marine alga has strong adsorptivity, will be urinated The available fertilizers such as element are adsorbed, and realize efficiency slow release, and on the other hand, crushing speed should not be too high, are in order to avoid destruction sea The microcellular structure of algae, improves adsorptivity;It is standby by crushed stalk to 50 microns, belong to the base fertilizer of the present invention, not only favorably In recycling economy, the consumption for reducing conventional fertilizers is also helped so that soil is rehabilitated;Cigarette foam is crushed to into 50 micro- Rice, standby, the particle size range is easy to cigarette foam absorbed by crops;By the marine alga got ready, cigarette foam, plant ash, fulvic acid, nitrogen-fixing bacteria, IBDU cladding urea, IBDU cladding ammonium dihydrogen phosphate, nitrogen-pyridine, triacontanol, amine fresh fat, indolebutyric acid Sodium, the stalk crushed stir;Granulation, by the compound fertilizer for stirring the particle of 3mm diameters is caused, and is easy to fertilising.

Claims (5)

1. a kind of organic slow-release compound fertilizer based on marine alga, it is characterised in that including following components:
Marine alga 1%-3%
Cigarette foam 1%-3%
Plant ash 2%-5%
Fulvic acid 1%-5%
Nitrogen-fixing bacteria 0.1%-0.5%
IBDU coats urea 15%-35%
IBDU coats ammonium dihydrogen phosphate 2%-8%
Nitrogen-pyridine 1%-5%
Triacontanol 0.1%-0.5%
Amine fresh fat 0.1%-0.5%
Indolebutyric acid sodium 0.1%-0.5%
Remaining is the stalk crushed.
2. a kind of organic slow-release compound fertilizer based on marine alga as claimed in claim 1, it is characterised in that:The marine alga particle diameter For 3-50 microns.
3. a kind of organic slow-release compound fertilizer based on marine alga as claimed in claim 1, it is characterised in that:The cigarette foam particle diameter For 3-50 microns.
4. a kind of organic slow-release compound fertilizer based on marine alga as claimed in claim 1, it is characterised in that:The stalk is wheat At least one in stalk, cornstalk, rice straw, its particle diameter is 3-50 microns.
5. a kind of production technology of the organic slow-release compound fertilizer based on marine alga, it is characterised in that comprise the following steps:
Get the raw materials ready;
Marine alga is broken to into the fine particle of 3-50 microns, speed is crushed and is not higher than 300r/min, it is standby;
It is standby by crushed stalk to 3-50 microns;
Cigarette foam is crushed to into 3-50 microns, it is standby;
By the marine alga got ready, cigarette foam, plant ash, fulvic acid, nitrogen-fixing bacteria, IBDU cladding urea, IBDU cladding Ammonium dihydrogen phosphate, nitrogen-pyridine, triacontanol, amine fresh fat, indolebutyric acid sodium, the stalk of crushing stir;
Granulation, by the compound fertilizer for stirring the particle of 1-3mm diameters is caused, and is easy to fertilising.
CN201611157510.5A 2016-12-15 2016-12-15 Alga-based organic slow-release compound fertilizer Withdrawn CN106631436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611157510.5A CN106631436A (en) 2016-12-15 2016-12-15 Alga-based organic slow-release compound fertilizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611157510.5A CN106631436A (en) 2016-12-15 2016-12-15 Alga-based organic slow-release compound fertilizer

Publications (1)

Publication Number Publication Date
CN106631436A true CN106631436A (en) 2017-05-10

Family

ID=58822555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611157510.5A Withdrawn CN106631436A (en) 2016-12-15 2016-12-15 Alga-based organic slow-release compound fertilizer

Country Status (1)

Country Link
CN (1) CN106631436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110249902A (en) * 2019-08-05 2019-09-20 山东省葡萄研究院 A kind of perennial grape high-survival rate method for transplanting not influencing Growth status

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104292041A (en) * 2014-11-11 2015-01-21 山东省农作物种质资源中心 Organic basic fertilizer with traditional Chinese medicines for winter wheat and preparation method of organic basic fertilizer
CN104341209A (en) * 2013-07-24 2015-02-11 山东恩宝生物科技有限公司 An alga fertilizer containing a growth regulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104341209A (en) * 2013-07-24 2015-02-11 山东恩宝生物科技有限公司 An alga fertilizer containing a growth regulator
CN104292041A (en) * 2014-11-11 2015-01-21 山东省农作物种质资源中心 Organic basic fertilizer with traditional Chinese medicines for winter wheat and preparation method of organic basic fertilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110249902A (en) * 2019-08-05 2019-09-20 山东省葡萄研究院 A kind of perennial grape high-survival rate method for transplanting not influencing Growth status

Similar Documents

Publication Publication Date Title
CN103058771B (en) Controlled-release and slow-release compound fertilizer specialized for kiwi fruit
US9394207B2 (en) Fertilizer, its use and a process for preparing it
CN102826922B (en) Fertilizer special for spring corn base fertilizer
US20170334795A1 (en) Sulphur-based fertilizer composition with humic acid content
CN102816024B (en) Special fertilizer for spring wheat base fertilizer
CN102851032B (en) Alkaline earth improving agent prepared by using monosodium glutamate production waste liquid, and preparation method thereof
CN102633559B (en) Activated carbon slow-release zinc fertilizer and preparation method thereof
CN104609953A (en) Microorganism fertilizer with coated straw bits and preparation method of microorganism fertilizer
CN102503632A (en) Selenium-rich organic/inorganic fertilizer for producing selenium-rick rice as well as application method thereof
CN104030751A (en) Bioorganic compound fertilizer and preparation method thereof
CN105001020A (en) Compound mixing fertilizer having heavy metal passivation effect, preparation method and uses thereof
CN102153411B (en) Special compound fertilizer for seedling raising of Acacia mangium*A.auriculiformis Cunn.ex Bench
CN101544890B (en) A fertility-betterment type soil-conditioner and the preparation method thereof
CN104642026A (en) Production process for organic selenium-rich rice
CN102653501A (en) Organic-inorganic functional fertilizer and preparation method thereof
CN108794177A (en) A kind of tea garden soil modifying agent and its application
CN102260118B (en) Novel readily available nutritive nitrogenous fertilizer
CN104045481A (en) Camellia oleifera dedicated composite biological organic fertilizer and preparation method thereof
CN102557842A (en) Nitrogen fertilizer synergist for vegetable planting and application method of synergist
CN106631436A (en) Alga-based organic slow-release compound fertilizer
CN106478308A (en) A kind of organic slow-release compound fertilizer based on cigarette foam
CN104447057A (en) High-strength slow release compound fertilizer for olive
CN103483046A (en) Special crop fertilizer
CN106631472A (en) Chitosan coated sustained release fertilizer special for corns, and preparation method thereof
El-Etr et al. Improving phosphorus use effeciency and its effect on the productivity of some crops

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: 20200309

Address after: 247100, 89, Tong Gang Avenue, Guichi District, Anhui, Chizhou

Applicant after: Anhui tengtuo new Mstar Technology Ltd

Address before: 247110 Anhui Province, Chizhou City District Qingyang County Yang Tian Zhen Industrial

Applicant before: Qingyang County Lennon the fertilizer limited company

TA01 Transfer of patent application right
WW01 Invention patent application withdrawn after publication

Application publication date: 20170510

WW01 Invention patent application withdrawn after publication