JP3922691B2 - Free-cutting steel - Google Patents
Free-cutting steel Download PDFInfo
- Publication number
- JP3922691B2 JP3922691B2 JP2002025341A JP2002025341A JP3922691B2 JP 3922691 B2 JP3922691 B2 JP 3922691B2 JP 2002025341 A JP2002025341 A JP 2002025341A JP 2002025341 A JP2002025341 A JP 2002025341A JP 3922691 B2 JP3922691 B2 JP 3922691B2
- Authority
- JP
- Japan
- Prior art keywords
- free
- cutting
- less
- steel
- mass
- 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 - Fee Related
Links
Landscapes
- Heat Treatment Of Steel (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、快削鋼に関し、特に切削するときの工具寿命に優れた快削元素無添加でAlN添加の快削鋼に関するものである。
【0002】
【従来の技術】
従来の快削鋼の多くは、鋼中の介在物による被削性向上を図っており、低切削速度域では、MnS、Pb、高切削速度域では、Ca系複合酸化物が主体で実用化されているが、MnSと同系統では、MnSe、MnTeが用いられ、Pbと同系統では、Biも用いられている。Ca系複合酸化物は、切削工具面上に付着して、工具と被削材との直接接触を防ぎ、工具の摩耗を抑制する。
【0003】
近年、地球環境問題からPbの不使用の動きがあり、また、能率向上のため、高速切削化が検討されるようになり、BN快削鋼や黒鉛快削鋼などのような新しい成分組成の快削鋼も開発されている。
【0004】
これらの従来快削鋼は、特開平3−64429号(従来技術1)、特開昭60−174854号(従来技術2)、特開昭61−291955号(従来技術3)、特開平1−319651号(従来技術4)、特開平7−316732号(従来技術5)などに開示されている。また、本発明者等も既に、特開2000−26935(従来技術6)、特開2001−342539(従来技術7)として提案している。
【0005】
【発明が解決しようとする課題】
しかしながら、従来技術1〜7は、以下のような課題があった。
【0006】
従来技術1は、工具鋼の切削時に切削速度150m/minでの効果を示しているものの、Alの規定がない。
【0007】
従来技術2は、Al:0.05〜0.50%を含有するものの、Zrの硫化物に対する接種作用を増大させ、硫化物を微細にすることにより被削性を向上させるためにAlを利用しているものであり、快削元素であるZrを必須とするものである。
【0008】
従来技術3は、Alを2.0%以下含有するものの、結晶組織の改善、熱処理特性の改善のためにAlを利用しているものであり、快削元素であるS、Teを必須とするものである。
【0009】
従来技術4は、Al:0.001〜0.100%を含有するものの、鋼中の酸素を固定し、BNの析出を促進させるためにAlを利用しているものであり、快削元素であるBNを必須とするものである。
【0010】
従来技術5は、Al:0.01〜0.1%を含有するものの、鋼中でAlNとなり、黒鉛の核生成サイトとしてAlを利用しているものであり、快削元素である黒鉛を必須とするものである。
【0011】
従来技術6は、Al、Nが含有されているが、同時にBも含有しており、鋼中に存在するのはBNである。
【0012】
従来技術7は、Alを含有しているが、酸化物や窒化物でないフリーのAlが有効であることを示したものである。
【0013】
この発明は、これらの課題を解決するためになされたもので、工具寿命に優れた快削元素無添加でAl、N添加の快削鋼を提供することを目的とする。
【0014】
【課題を解決するための手段】
本発明者等は、上記課題を達成するため、鋭意検討を行い、以下のような従来にない新知見を得た。
(1)快削元素の含有されていない場合、鋼中に析出したAlNが潤滑効果を示して工具寿命が向上する。
(2)快削元素(S、Pb、Ca等)を含有するとAlNの効果が現れない。
(3)AlとN含有量に最適範囲があることと、Al/Nにも最適範囲がある。
【0015】
この発明は、上記知見に基づきなされたものであり、下記を特徴とするものである。
【0016】
請求項1記載の発明は、C:0.01〜1.2%、Si:0.03〜1.5%、Mn:0.3〜2.0%、S:0.001〜0.040%、Al:0.052〜0.20%、N:0.0080〜0.0250%(以上、mass%)を含有し、残部Feおよび不可避的不純物からなり、且つ、下記条件Al/N:2.0〜15.0を満足し、快削元素を含まないことに特徴を有するものであり、請求項2記載の発明は、前記快削元素を含まないこととは、S:0.04%未満、Ca:0.001%以下、Pb:0.03%以下、黒鉛:0.002%以下、B:0.005%以下、Te:0.01%以下、Se:0.01%以下、Zr:0.02%以下、Ti:0.03%以下(以上、mass%)であることに特徴を有するものである。
【0017】
【発明の実施の形態】
次に、この発明における数値の限定理由について説明する。
【0018】
Al
Alは、鋼の脱酸に必要であり、且つ鋼中にAlNを析出させ、切削中の潤滑作用を有効にするのに必要な元素である。しかしながら、0.052mass%未満の含有量では効果がなく、一方、0.20mass%を超えると添加効果が飽和するため、0.052〜0.20mass%の範囲内とする。
【0019】
N
Nは、鋼中Alと結合してAlNとなる。AlNが多量に生成すると、被削性が向上するが、0.0080mass%未満の含有量では効果がなく、0.0250mass%を超えると添加効果が飽和するため、0.0080〜0.0250mass%の範囲内とする。
【0020】
Al/N
Al/Nは、鋼中に有効に(特に圧延ままでも)AlNを析出させるのに2.0以上が必要である。しかしながら、15.0を超えても効果が飽和するため、2.0〜15.0の範囲内とする。好ましい範囲は、2.5〜10.0である。
【0021】
S
Sは、鋼中でMnSとなり、被削性向上に有効である。しかしながら、MnSが多く存在すると、AlNの効果が消失してしまう。その含有量については、0.001mass%未満では、製造上コスト高になり、0.040mass%を超えるとAlNの効果がなくなるため、0.001〜0.040mass%の範囲内とする。
【0022】
快削元素を添加すると、AlNが有効でなくなるため、この発明においては、快削元素を無添加とする。
【0023】
この発明において快削元素とは、S、Ca、Pb、黒鉛、BN、Te、Se、Zr、Ti等、従来より、快削鋼に用いられている元素をいい、添加量がS:0.04%未満、Ca:0.001%以下、Pb:0.03%以下、黒鉛:0.002%以下、B:0.005%以下、Te:0.01%以下、Se:0.01%以下、Zr:0.02%以下、Ti:0.03%(何れもmass%)以下を無添加とする。
【0024】
なお、この発明は、鋼の成分組成として、上述したAl、N、S、Al/Nおよび快削元素に関する規定を満足すればよく、冷間鍛造用鋼材、機械構造用炭素鋼および低合金鋼、工具鋼、軸受鋼、ステンレス鋼等でその効果が得られる。これら鋼には、C:0.01〜1.2%、Si:0.03〜1.5%、Mn:0.3〜2.0%(何れもmass%)が含有されると望ましい効果が得られる。
【0025】
以下に、これらの成分限定理由について説明する。
【0026】
C
Cは、強度を確保するため、0.01%以上添加する。一方、1.2%を超えると靭性が劣化するため、0.01〜1.2%添加する。
【0027】
Si
Siは、脱酸剤として0.03%以上添加する。一方、1.5%を超えるとフェライトが硬化して靭性が劣化するため、0.03〜1.5%添加する。
【0028】
Mn
Mnは、強度を確保するため、0.3%以上添加する。一方、2.0%を超えると靭性が劣化するため、0.3〜2.0%添加する。
【0029】
【実施例】
次に、この発明を実施例によりさらに説明する。
【0030】
表1に示す化学成分を有する鋼をそれぞれ真空溶解炉にて150kg溶製した。表1において、No.2〜6は、本発明鋼、No.7〜12は、比較鋼であり、No.7は、通常のS45C、No.8は、S量が本発明範囲より多い鋼、No.9は、Al量が本発明範囲より少ない鋼、No.10は、Nが本発明範囲より少ない鋼、No.11、12は、Al、Nは、本発明範囲内であるが、Al/Nが本発明範囲外である鋼である。
【0031】
【表1】
【0032】
次いで、それぞれ150kg鋼塊にした後、熱間鍛造(1200℃、70mm丸:旋削用、100mm角:フライス用)、焼ならし(850℃、2時間加熱後空冷)し、下記試験に供した。
【0033】
切削は、旋盤による乾式長手旋削とフライス盤による乾式断続切削を行った。条件は、表2の通りである。すなわち、逃げ面摩耗の測定を行い、V=100m/minでは、摩耗幅(VB)が0.05mmとなる時間(分)で、V=200m/minおよびV=300m/minでは、それぞれ摩耗幅(VB)が0.1mmとなる時間(分)で評価した。
【0034】
【表2】
【0035】
表3に結果を示す。
【0036】
【表3】
【0037】
表3から明らかなように、本発明鋼No.2〜6は、比較鋼No.7〜12に比べて、旋削(連続切削)、フライス加工(断続切削)とも工具寿命に優れていることが分かった。特に、フライス加工による断続高速切削ほど効果が著しいことが分かった。
【0038】
【発明の効果】
以上述べたように、この発明によれば、切削時の工具寿命に優れた快削鋼が得られ、切削時の能率が向上し、また、快削元素としてのPb無添加であるので、地球環境問題にも配慮しており、産業上きわめて有用である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a free-cutting steel, and more particularly to a free-cutting steel that does not contain a free-cutting element and that is excellent in tool life during cutting and that contains AlN.
[0002]
[Prior art]
Many conventional free-cutting steels have improved machinability due to inclusions in the steel. Practical use is mainly made of MnS and Pb in the low cutting speed range and Ca-based composite oxides in the high cutting speed range. However, MnSe and MnTe are used in the same system as MnS, and Bi is also used in the same system as Pb. The Ca-based composite oxide adheres to the cutting tool surface, prevents direct contact between the tool and the work material, and suppresses wear of the tool.
[0003]
In recent years, there has been a movement of non-use of Pb due to global environmental problems, and high-speed cutting has been studied to improve efficiency, and new component compositions such as BN free cutting steel and graphite free cutting steel have been studied. Free-cutting steel has also been developed.
[0004]
These conventional free-cutting steels are disclosed in JP-A-3-64429 (Prior Art 1), JP-A-60-174854 (Prior Art 2), JP-A 61-291955 (Prior Art 3), and JP-A-1- No. 319651 (Prior Art 4), JP-A-7-316732 (Prior Art 5), and the like. In addition, the present inventors have already proposed as Japanese Patent Laid-Open Nos. 2000-26935 (Prior Art 6) and 2001-342539 (Prior Art 7).
[0005]
[Problems to be solved by the invention]
However, the prior arts 1 to 7 have the following problems.
[0006]
Although the prior art 1 has shown the effect in the cutting speed of 150 m / min at the time of cutting of tool steel, there is no prescription | regulation of Al.
[0007]
Prior art 2 contains Al: 0.05 to 0.50%, but increases the inoculation action of Zr on sulfides and uses Al to improve the machinability by making the sulfides finer Therefore, Zr, which is a free-cutting element, is essential.
[0008]
Prior art 3 contains 2.0% or less of Al, but uses Al for improvement of crystal structure and heat treatment characteristics, and requires free cutting elements S and Te. Is.
[0009]
Prior art 4 contains Al: 0.001 to 0.100%, but uses Al to fix oxygen in the steel and promote precipitation of BN. A certain BN is essential.
[0010]
Prior art 5 contains Al: 0.01 to 0.1%, but becomes AlN in steel and uses Al as a nucleation site for graphite, and graphite, which is a free-cutting element, is essential. It is what.
[0011]
Prior art 6 contains Al and N, but also contains B at the same time, and BN is present in the steel.
[0012]
Prior art 7 shows that Al is contained but free Al that is not an oxide or nitride is effective.
[0013]
The present invention has been made to solve these problems, and an object of the present invention is to provide a free-cutting steel containing Al and N added with no free-cutting elements and having excellent tool life.
[0014]
[Means for Solving the Problems]
In order to achieve the above-mentioned problems, the present inventors have conducted intensive studies and obtained the following new knowledge that has not been obtained conventionally.
(1) When no free-cutting element is contained, AlN precipitated in the steel exhibits a lubricating effect and the tool life is improved.
(2) When free-cutting elements (S, Pb, Ca, etc.) are contained, the effect of AlN does not appear.
(3) Al and N contents have optimum ranges, and Al / N also has optimum ranges.
[0015]
The present invention has been made on the basis of the above findings, and is characterized by the following.
[0016]
Invention of Claim 1 is C: 0.01-1.2%, Si: 0.03-1.5%, Mn: 0.3-2.0%, S: 0.001-0.040 %, Al: 0.052 to 0.20%, N: 0.0080 to 0.0250% (above, mass%), the balance being Fe and inevitable impurities, and the following conditions Al / N: 2.0 to 15.0 is satisfied, and it is characterized by not containing a free-cutting element. The invention according to claim 2 does not contain the free-cutting element. S: 0.04 %, Ca: 0.001% or less, Pb: 0.03% or less, Graphite: 0.002% or less, B: 0.005% or less, Te: 0.01% or less, Se: 0.01% or less , Zr: 0.02% or less, Ti: 0.03% or less (above, mass%).
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, the reason for limiting the numerical values in the present invention will be described.
[0018]
Al
Al is an element necessary for deoxidizing steel, and for precipitating AlN in the steel and making the lubricating action during cutting effective. However, if the content is less than 0.052 mass%, there is no effect. On the other hand, if it exceeds 0.20 mass%, the effect of addition is saturated, so the content is in the range of 0.052 to 0.20 mass%.
[0019]
N
N combines with Al in the steel to become AlN. When a large amount of AlN is generated, machinability is improved, but if the content is less than 0.0080 mass%, there is no effect, and if it exceeds 0.0250 mass%, the additive effect is saturated, so 0.0080 to 0.0250 mass%. Within the range of
[0020]
Al / N
Al / N needs to be 2.0 or more in order to precipitate AlN effectively (especially as it is rolled) in steel. However, even if it exceeds 15.0, the effect is saturated, so the range is 2.0 to 15.0. A preferred range is 2.5 to 10.0.
[0021]
S
S becomes MnS in steel and is effective for improving machinability. However, if there is a large amount of MnS, the effect of AlN will disappear. About the content, if it is less than 0.001 mass%, it will become expensive on manufacture, and if it exceeds 0.040 mass%, since the effect of AlN will be lose | eliminated, it shall be in the range of 0.001-0.040 mass%.
[0022]
When a free cutting element is added, AlN becomes ineffective, so in this invention, no free cutting element is added.
[0023]
In this invention, the free-cutting element means an element conventionally used in free-cutting steel such as S, Ca, Pb, graphite, BN, Te, Se, Zr, Ti, etc., and the addition amount is S: 0. Less than 04%, Ca: 0.001% or less, Pb: 0.03% or less, Graphite: 0.002% or less, B: 0.005% or less, Te: 0.01% or less, Se: 0.01% Hereinafter, Zr: 0.02% or less, Ti: 0.03% (both mass%) or less are not added.
[0024]
The present invention only needs to satisfy the above-mentioned rules regarding Al, N, S, Al / N and free-cutting elements as the component composition of steel, and steel materials for cold forging, carbon steel for machine structure and low alloy steel. The effect can be obtained with tool steel, bearing steel, stainless steel and the like. When these steels contain C: 0.01 to 1.2%, Si: 0.03 to 1.5%, Mn: 0.3 to 2.0% (both mass%), desirable effects Is obtained.
[0025]
The reasons for limiting these components will be described below.
[0026]
C
C is added in an amount of 0.01% or more to ensure strength. On the other hand, if it exceeds 1.2%, the toughness deteriorates, so 0.01 to 1.2% is added.
[0027]
Si
Si is added in an amount of 0.03% or more as a deoxidizer. On the other hand, if it exceeds 1.5%, the ferrite hardens and the toughness deteriorates, so 0.03 to 1.5% is added.
[0028]
Mn
Mn is added in an amount of 0.3% or more to ensure strength. On the other hand, if it exceeds 2.0%, the toughness deteriorates, so 0.3 to 2.0% is added.
[0029]
【Example】
Next, the present invention will be further described with reference to examples.
[0030]
150 kg of steels having chemical components shown in Table 1 were melted in a vacuum melting furnace. In Table 1, no. 2 to 6 are steels of the present invention, No. Nos. 7 to 12 are comparative steels. 7 is a normal S45C, No. 7; No. 8 is a steel having an amount of S greater than the range of the present invention, No. No. 9 is a steel with an Al content less than the range of the present invention, No. 9; No. 10 is a steel with N less than the scope of the present invention, No. 10; 11 and 12 are steels in which Al and N are within the scope of the present invention, but Al / N is outside the scope of the present invention.
[0031]
[Table 1]
[0032]
Next, after each 150 kg steel ingot, hot forging (1200 ° C., 70 mm round: for turning, 100 mm square: for milling), normalizing (850 ° C., 2 hours heating and air cooling), and subjected to the following test .
[0033]
For the cutting, dry longitudinal turning with a lathe and dry intermittent cutting with a milling machine were performed. The conditions are as shown in Table 2. That is, the flank wear is measured, and when V = 100 m / min, the wear width (VB) is a time (minute) when 0.05 mm, and when V = 200 m / min and V = 300 m / min, the wear width is The time (minutes) at which (VB) was 0.1 mm was evaluated.
[0034]
[Table 2]
[0035]
Table 3 shows the results.
[0036]
[Table 3]
[0037]
As is apparent from Table 3, the present invention steel No. 2-6 are comparative steel No.2 . Compared with 7-12, it turned out that turning (continuous cutting) and milling (intermittent cutting) are excellent in tool life. In particular, it was found that the effect is more remarkable as intermittent high-speed cutting by milling.
[0038]
【The invention's effect】
As described above, according to the present invention, free-cutting steel having excellent tool life at the time of cutting is obtained, the efficiency at the time of cutting is improved, and Pb is not added as a free-cutting element. Considering environmental issues, it is extremely useful in industry.
Claims (2)
Si:0.03〜1.5%、
Mn:0.3〜2.0%、
S :0.001〜0.040%、
Al:0.052〜0.20%、
N :0.0080〜0.0250%(以上、mass%)
を含有し、残部Feおよび不可避的不純物からなり、且つ、下記条件Al/N:2.0〜15.0を満足し、快削元素を含まないことを特徴とする快削鋼。C: 0.01-1.2%
Si: 0.03 to 1.5%,
Mn: 0.3 to 2.0%,
S: 0.001 to 0.040%,
Al: 0.052 to 0.20%,
N: 0.0080-0.0250% (above, mass%)
Free-cutting steel characterized by comprising the remainder Fe and unavoidable impurities, satisfying the following conditions Al / N: 2.0 to 15.0, and free-cutting elements.
S :0.04%未満、
Ca:0.001%以下、
Pb:0.03%以下、
黒鉛:0.002%以下、
B :0.005%以下、
Te:0.01%以下、
Se:0.01%以下、
Zr:0.02%以下、
Ti:0.03%以下(以上、mass%)
であることを特徴とする、請求項1記載の快削鋼。Not containing the free-cutting element
S: less than 0.04%,
Ca: 0.001% or less,
Pb: 0.03% or less,
Graphite: 0.002% or less,
B: 0.005% or less,
Te: 0.01% or less,
Se: 0.01% or less,
Zr: 0.02% or less,
Ti: 0.03% or less (above, mass%)
The free-cutting steel according to claim 1, wherein
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002025341A JP3922691B2 (en) | 2002-02-01 | 2002-02-01 | Free-cutting steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002025341A JP3922691B2 (en) | 2002-02-01 | 2002-02-01 | Free-cutting steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003226932A JP2003226932A (en) | 2003-08-15 |
JP3922691B2 true JP3922691B2 (en) | 2007-05-30 |
Family
ID=27747522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002025341A Expired - Fee Related JP3922691B2 (en) | 2002-02-01 | 2002-02-01 | Free-cutting steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3922691B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4193998B1 (en) | 2007-06-28 | 2008-12-10 | 株式会社神戸製鋼所 | Machine structural steel excellent in machinability and manufacturing method thereof |
JP5031931B2 (en) * | 2010-05-31 | 2012-09-26 | 新日本製鐵株式会社 | Hardened steel and power transmission parts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09157752A (en) * | 1995-11-29 | 1997-06-17 | Aichi Steel Works Ltd | Production of non-heat treated friction pressure welded shaft |
JPH09291344A (en) * | 1996-02-26 | 1997-11-11 | Nippon Steel Corp | Low hardness martensitic stainless steel |
JP3606024B2 (en) * | 1997-10-28 | 2005-01-05 | Jfeスチール株式会社 | Induction-hardened parts and manufacturing method thereof |
JP3780690B2 (en) * | 1998-03-23 | 2006-05-31 | 住友金属工業株式会社 | Hot work tool steel with excellent machinability and tool life |
JP2000017377A (en) * | 1998-07-03 | 2000-01-18 | Aichi Steel Works Ltd | Air cooled martensitic steel and its production |
-
2002
- 2002-02-01 JP JP2002025341A patent/JP3922691B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2003226932A (en) | 2003-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4986203B2 (en) | BN free-cutting steel with excellent tool life | |
JP2009007643A (en) | Steel for machine structure having excellent machinability | |
JP5368885B2 (en) | Machine structural steel with excellent hot workability and machinability | |
JP5461929B2 (en) | BN free-cutting steel with excellent chip disposal | |
JP3922691B2 (en) | Free-cutting steel | |
JP2003049240A (en) | Free-cutting steel | |
JP2008106306A (en) | Ferritic free-cutting stainless steel | |
JP4279041B2 (en) | Non-Pb free-cutting stainless steel with excellent outgassing characteristics | |
JP2001329335A (en) | Low carbon sulfur based bn free cutting steel excellent in hot ductility | |
JP2001342539A (en) | Steel for high speed intermittent cutting | |
JP2002038241A (en) | Free cutting stainless steel | |
JP4250305B2 (en) | BN free cutting steel with excellent soft magnetism | |
JP2004292929A (en) | Steel for machine structural use | |
JP2733989B2 (en) | Free cutting steel with excellent hot ductility | |
JP2000319753A (en) | Low carbon sulfur base free-cutting steel | |
JP3253702B2 (en) | Carbon steel for machine structure with excellent machinability | |
JP2013159839A (en) | High hardness bn-based free-cutting steel superior in tool life and having hardness of 300 hv10 or more | |
JP5318638B2 (en) | Machine structural steel with excellent machinability | |
JPS61133366A (en) | Case hardening steel for cold forging provided with free-machinability | |
JPH07188850A (en) | Graphite free-cutting steel excellent in machinability | |
JPH11217653A (en) | Martensitic stainless steel excellent in machinability and having high corrosion resistance and high strength | |
JPH0826434B2 (en) | High hardness and high toughness Low alloy high speed tool steel | |
JP3566120B2 (en) | Cold tool steel with high cycle fatigue life and excellent machinability | |
JPH0610091A (en) | High strength hot forged non-refined product excellent in machinability | |
JP4144453B2 (en) | Steel material excellent in cold workability and nitriding characteristics and method for producing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040714 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060615 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060718 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060912 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20061031 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061226 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20070112 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070213 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070219 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 3922691 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110302 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120302 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130302 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140302 Year of fee payment: 7 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313114 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313114 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |