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A filler material for a spiral wound gasket, comprises an expansive graphite tape (2) formed by integrally pressurizing expanded graphite particles, wherein a high density dense layer on a front or back surface (2A, 2B) portion of said expansive graphite tape is removed.This invention also provides a spiral wound gasket (W) formed by overlapping a filler material and another filler material with each other, whereina hoop material (5) made of metal band plate and the filler material (1) formed by removing a high density dense layer portion on a front or back surface (2A, 2B) of an expansive graphite tape formed by integrally pressurizing expanded graphite particles are overlapped with each other and wound in the form of a spiral.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
26 October 1998
Publication Number
Publication Type
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2005-10-14
Renewal Date
Applicants
NIPPON PILLAR PACKING CO., LTD
11-48, NONAKAMINAMI 2-CHOME, YODOGAWA-KU, OSAKA-SHI, OSAKA-FU
Inventors
1. TAKAHISA UEDA
C/O NIPPON PILLAR PACKING CO. LTD., SANDA FACTORY, 541-1, AZA-UTSUBA, SHIMOUCHIGAMI, SANDA-SHI, HYOGO-KEN
2. HIDETO HASHIGUCHI
C/O NIPPON PILLAR PACKING CO. LTD., SANDA FACTORY, 541-1, AZA-UTSUBA, SHIMOUCHIGAMI, SANDA-SHI, HYOGO-KEN
3. TAKESHI MIYOSHI
C/O NIPPON PILLAR PACKING CO. LTD., SANDA FACTORY, 541-1, AZA-UTSUBA, SHIMOUCHIGAMI, SANDA-SHI, HYOGO-KEN
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1896-cal-1998-granted-specification.pdf | 2011-10-07 |
| 2 | 1896-cal-1998-granted-reply to examination report.pdf | 2011-10-07 |
| 3 | 1896-cal-1998-granted-letter patent.pdf | 2011-10-07 |
| 4 | 1896-cal-1998-granted-gpa.pdf | 2011-10-07 |
| 5 | 1896-cal-1998-granted-form 3.pdf | 2011-10-07 |
| 6 | 1896-cal-1998-granted-form 1.pdf | 2011-10-07 |
| 7 | 1896-cal-1998-granted-description (complete).pdf | 2011-10-07 |
| 8 | 1896-cal-1998-granted-correspondence.pdf | 2011-10-07 |
| 9 | 1896-cal-1998-granted-claims.pdf | 2011-10-07 |
| 10 | 1896-cal-1998-granted-assignment.pdf | 2011-10-07 |
| 11 | 1896-cal-1998-granted-abstract.pdf | 2011-10-07 |
| 12 | 1896-CAL-1998-FORM 27.pdf | 2011-10-07 |
| 13 | 1896-CAL-1998-FORM 27-1.1.pdf | 2011-10-07 |
| 14 | 1896-CAL-1998-CORRESPONDENCE 1.1.pdf | 2011-10-07 |
| 15 | 01896-cal-1998-g.p.a.pdf | 2011-10-07 |
| 16 | 01896-cal-1998-form-3.pdf | 2011-10-07 |
| 17 | 01896-cal-1998-form-2.pdf | 2011-10-07 |
| 18 | 01896-cal-1998-form-1.pdf | 2011-10-07 |
| 19 | 01896-cal-1998-drawings.pdf | 2011-10-07 |
| 20 | 01896-cal-1998-description(complete).pdf | 2011-10-07 |
| 21 | 01896-cal-1998-correspondence.pdf | 2011-10-07 |
| 22 | 01896-cal-1998-claims.pdf | 2011-10-07 |
| 23 | 01896-cal-1998-assignment.pdf | 2011-10-07 |
| 24 | 01896-cal-1998-abstract.pdf | 2011-10-07 |
| 25 | 1892-CAL-1996-FORM-27.pdf | 2012-06-12 |
| 26 | 1896-CAL-1998-(17-02-2014)-FORM-27.pdf | 2014-02-17 |
| 27 | 1896-CAL-1998-(19-03-2015)-FORM-27.pdf | 2015-03-19 |