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"Screw Compressor"
Abstract: A screw compressor includes a casing forming a bore for accommodating a male rotor and a female rotor of which lobes mesh with each other, an axial suction port on a suction side of the casing, and a delivery port on a delivery side, the axial suction port configured by a contour line including a line along a male lobe profile and a line along a female lobe profile, and the line along the male lobe profile disposed at a predetermined displacement angle toward a rotational direction of the male rotor from a following side contour line position of a male lobe groove at which position the volume of a working chamber formed by the male lobe groove of the male rotor, a female lobe groove of the female rotor and the bore is maximum. Fig. 1
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
24 May 2011
Publication Number
18/2012
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2019-03-11
Renewal Date
Applicants
HITACHI PLANT TECHNOLOGIES, LTD.
5-2 HIGASHI-IKEBUKURO 4-CHOME, TOSHIMA-KU, TOKYO 170-8466 JAPAN.
Inventors
1. ISHIKAWA MASANORI
C/O HITACHI, LTD., INTELLECTUAL PROPERTY GROUP, 12TH FLOOR, MARUNOUCHI CENTER BUILDING, 6-1, MARUNOUCHI 1-CHOME, CHIYODA-KU, TOKYO 100-8220 JAPAN.
2. KAMEYA HIROTAKA
C/O HITACHI, LTD., INTELLECTUAL PROPERTY GROUP, 12TH FLOOR, MARUNOUCHI CENTER BUILDING, 6-1, MARUNOUCHI 1-CHOME, CHIYODA-KU, TOKYO 100-8220 JAPAN.
3. UCHIDA RIICHI
C/O HITACHI, LTD., INTELLECTUAL PROPERTY GROUP, 12TH FLOOR, MARUNOUCHI CENTER BUILDING, 6-1, MARUNOUCHI 1-CHOME, CHIYODA-KU, TOKYO 100-8220 JAPAN.
4. TSURU SEIJI
C/O HITACHI PLANT TECHNOLOGIES, LTD., OF 5-2 HIGASHI-IKEBUKURO 4-CHOME, TOSHIMA-KU, TOKYO JAPAN.
5. SAITO TAKASHI
C/O HITACHI PLANT TECHNOLOGIES, LTD., OF 5-2 HIGASHI-IKEBUKURO 4-CHOME, TOSHIMA-KU, TOKYO JAPAN.
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1480-DEL-2011-Form-1-(21-07-2011).pdf | 2011-07-21 |
| 1 | 1480-DEL-2011-RELEVANT DOCUMENTS [21-08-2023(online)].pdf | 2023-08-21 |
| 2 | 1480-DEL-2011-RELEVANT DOCUMENTS [10-09-2022(online)].pdf | 2022-09-10 |
| 2 | 1480-DEL-2011-Correspondence-Others-(21-07-2011).pdf | 2011-07-21 |
| 3 | 1480-DEL-2011-RELEVANT DOCUMENTS [17-08-2021(online)].pdf | 2021-08-17 |
| 3 | 1480-del-2011-Form-3-(16-11-2011).pdf | 2011-11-16 |
| 4 | 1480-DEL-2011-RELEVANT DOCUMENTS [09-03-2020(online)].pdf | 2020-03-09 |
| 4 | 1480-del-2011-Correspondence Others-(16-11-2011).pdf | 2011-11-16 |
| 5 | Abstract.jpg | 2012-01-30 |
| 5 | 1480-DEL-2011-IntimationOfGrant11-03-2019.pdf | 2019-03-11 |
| 6 | 1480-DEL-2011-PatentCertificate11-03-2019.pdf | 2019-03-11 |
| 6 | 1480-del-2011-GPA.pdf | 2012-01-30 |
| 7 | 1480-del-2011-Form-5.pdf | 2012-01-30 |
| 7 | 1480-DEL-2011-ABSTRACT [25-08-2017(online)].pdf | 2017-08-25 |
| 8 | 1480-del-2011-Form-3.pdf | 2012-01-30 |
| 8 | 1480-DEL-2011-CLAIMS [25-08-2017(online)].pdf | 2017-08-25 |
| 9 | 1480-del-2011-Form-2.pdf | 2012-01-30 |
| 9 | 1480-DEL-2011-COMPLETE SPECIFICATION [25-08-2017(online)].pdf | 2017-08-25 |
| 10 | 1480-DEL-2011-FER_SER_REPLY [25-08-2017(online)].pdf | 2017-08-25 |
| 10 | 1480-del-2011-Form-18.pdf | 2012-01-30 |
| 11 | 1480-del-2011-Form-1.pdf | 2012-01-30 |
| 11 | 1480-DEL-2011-OTHERS [25-08-2017(online)].pdf | 2017-08-25 |
| 12 | 1480-del-2011-Drawings.pdf | 2012-01-30 |
| 12 | 1480-DEL-2011-PETITION UNDER RULE 137 [25-08-2017(online)].pdf | 2017-08-25 |
| 13 | 1480-del-2011-Description (Complete).pdf | 2012-01-30 |
| 13 | 1480-DEL-2011-FORM 3 [17-07-2017(online)].pdf | 2017-07-17 |
| 14 | 1480-del-2011-Correspondence Others.pdf | 2012-01-30 |
| 14 | 1480-DEL-2011-Information under section 8(2) (MANDATORY) [17-07-2017(online)].pdf | 2017-07-17 |
| 15 | 1480-del-2011-Claims.pdf | 2012-01-30 |
| 15 | 1480-DEL-2011-Verified English translation (MANDATORY) [17-07-2017(online)].pdf | 2017-07-17 |
| 16 | 1480-del-2011-Abstract.pdf | 2012-01-30 |
| 16 | 1480-DEL-2011-Correspondence-300317.pdf | 2017-04-01 |
| 17 | 1480-DEL-2011-OTHERS-300317.pdf | 2017-04-01 |
| 17 | poa_20140305120242.pdf | 2014-03-07 |
| 18 | 1480-DEL-2011-Power of Attorney-300317.pdf | 2017-04-01 |
| 18 | Notarized copy of the Certificate of the Company Register of Hitachi, Ltd..pdf | 2014-03-07 |
| 19 | Form-6.pdf | 2014-03-07 |
| 19 | Assignment [25-03-2017(online)].pdf | 2017-03-25 |
| 20 | 1480-del-2011-GPA-(11-04-2014).pdf | 2014-04-11 |
| 20 | Form 6 [25-03-2017(online)].pdf | 2017-03-25 |
| 21 | 1480-del-2011-Form-2-(11-04-2014).pdf | 2014-04-11 |
| 21 | Power of Attorney [25-03-2017(online)].pdf | 2017-03-25 |
| 22 | 1480-del-2011-Correspondence-Others-(11-04-2014).pdf | 2014-04-11 |
| 22 | 1480-DEL-2011-FER.pdf | 2017-03-10 |
| 23 | 1480-del-2011-Correspondence-Others-(11-04-2014).pdf | 2014-04-11 |
| 23 | 1480-DEL-2011-FER.pdf | 2017-03-10 |
| 24 | 1480-del-2011-Form-2-(11-04-2014).pdf | 2014-04-11 |
| 24 | Power of Attorney [25-03-2017(online)].pdf | 2017-03-25 |
| 25 | Form 6 [25-03-2017(online)].pdf | 2017-03-25 |
| 25 | 1480-del-2011-GPA-(11-04-2014).pdf | 2014-04-11 |
| 26 | Assignment [25-03-2017(online)].pdf | 2017-03-25 |
| 26 | Form-6.pdf | 2014-03-07 |
| 27 | 1480-DEL-2011-Power of Attorney-300317.pdf | 2017-04-01 |
| 27 | Notarized copy of the Certificate of the Company Register of Hitachi, Ltd..pdf | 2014-03-07 |
| 28 | 1480-DEL-2011-OTHERS-300317.pdf | 2017-04-01 |
| 28 | poa_20140305120242.pdf | 2014-03-07 |
| 29 | 1480-del-2011-Abstract.pdf | 2012-01-30 |
| 29 | 1480-DEL-2011-Correspondence-300317.pdf | 2017-04-01 |
| 30 | 1480-del-2011-Claims.pdf | 2012-01-30 |
| 30 | 1480-DEL-2011-Verified English translation (MANDATORY) [17-07-2017(online)].pdf | 2017-07-17 |
| 31 | 1480-del-2011-Correspondence Others.pdf | 2012-01-30 |
| 31 | 1480-DEL-2011-Information under section 8(2) (MANDATORY) [17-07-2017(online)].pdf | 2017-07-17 |
| 32 | 1480-del-2011-Description (Complete).pdf | 2012-01-30 |
| 32 | 1480-DEL-2011-FORM 3 [17-07-2017(online)].pdf | 2017-07-17 |
| 33 | 1480-del-2011-Drawings.pdf | 2012-01-30 |
| 33 | 1480-DEL-2011-PETITION UNDER RULE 137 [25-08-2017(online)].pdf | 2017-08-25 |
| 34 | 1480-del-2011-Form-1.pdf | 2012-01-30 |
| 34 | 1480-DEL-2011-OTHERS [25-08-2017(online)].pdf | 2017-08-25 |
| 35 | 1480-DEL-2011-FER_SER_REPLY [25-08-2017(online)].pdf | 2017-08-25 |
| 35 | 1480-del-2011-Form-18.pdf | 2012-01-30 |
| 36 | 1480-DEL-2011-COMPLETE SPECIFICATION [25-08-2017(online)].pdf | 2017-08-25 |
| 36 | 1480-del-2011-Form-2.pdf | 2012-01-30 |
| 37 | 1480-del-2011-Form-3.pdf | 2012-01-30 |
| 37 | 1480-DEL-2011-CLAIMS [25-08-2017(online)].pdf | 2017-08-25 |
| 38 | 1480-del-2011-Form-5.pdf | 2012-01-30 |
| 38 | 1480-DEL-2011-ABSTRACT [25-08-2017(online)].pdf | 2017-08-25 |
| 39 | 1480-DEL-2011-PatentCertificate11-03-2019.pdf | 2019-03-11 |
| 39 | 1480-del-2011-GPA.pdf | 2012-01-30 |
| 40 | Abstract.jpg | 2012-01-30 |
| 40 | 1480-DEL-2011-IntimationOfGrant11-03-2019.pdf | 2019-03-11 |
| 41 | 1480-DEL-2011-RELEVANT DOCUMENTS [09-03-2020(online)].pdf | 2020-03-09 |
| 41 | 1480-del-2011-Correspondence Others-(16-11-2011).pdf | 2011-11-16 |
| 42 | 1480-DEL-2011-RELEVANT DOCUMENTS [17-08-2021(online)].pdf | 2021-08-17 |
| 42 | 1480-del-2011-Form-3-(16-11-2011).pdf | 2011-11-16 |
| 43 | 1480-DEL-2011-Correspondence-Others-(21-07-2011).pdf | 2011-07-21 |
| 43 | 1480-DEL-2011-RELEVANT DOCUMENTS [10-09-2022(online)].pdf | 2022-09-10 |
| 44 | 1480-DEL-2011-Form-1-(21-07-2011).pdf | 2011-07-21 |
| 44 | 1480-DEL-2011-RELEVANT DOCUMENTS [21-08-2023(online)].pdf | 2023-08-21 |
Search Strategy
| 1 | SearchStrategy1480DEL2011_02-01-2017.pdf |