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(12) Patent: | (11) CA 2248804 |
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(54) English Title: | COMPOSITE FILLED HOLLOW STRUCTURE |
(54) French Title: | STRUCTURE CREUSE GARNIE DE MATERIAU COMPOSITE |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | 2002-08-20 |
(86) PCT Filing Date: | 1996-03-29 |
(87) Open to Public Inspection: | 1997-10-09 |
Examination requested: | 1998-09-04 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/US1996/003641 |
(87) International Publication Number: | US1996003641 |
(85) National Entry: | 1998-09-04 |
(30) Application Priority Data: | None |
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A filled hollow structure (10), such as a fence post, which is constructed
with a hollow member (14) filled with a core (12) to increase its strength.
One aspect of the structure is that the core material normal expands upon
setting, so that, when hardening within the hollow member, the expansion is
restrained by the hollow member and the core is formed into an integral
structure with the hollow member. Further strength is added by constructing
the hollow member of reinforced fiberglass with the fiberglass rovings
oriented at an angle to the axis of the pipe and by using a hard coating (18)
on the outside of the pipe.
L'invention concerne une structure creuse (10) garnie, telle qu'un piquet de barrière. Ladite structure se compose d'un élément creux (14) garni d'un noyau (12) qui augmente sa solidité. Le matériau constituant le noyau se dilate normalement lors de la prise, de sorte que lorsqu'il durcit à l'intérieur de l'élément creux, la dilatation est restreinte par l'élément creux et le noyau forme une structure intégrée à ce dernier. On augmente encore la solidité, en utilisant de la fibre de verre renforcée comprenant des stratifils de verre textile orientés selon un certain angle par rapport à l'axe du tuyau et en utilisant un revêtement dur (18) sur l'extérieur du tuyau.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Inactive: Agents merged | 2015-11-05 |
Time Limit for Reversal Expired | 2006-03-29 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Letter Sent | 2005-03-29 |
Revocation of Agent Requirements Determined Compliant | 2004-07-06 |
Inactive: Office letter | 2004-07-06 |
Inactive: Office letter | 2004-07-06 |
Appointment of Agent Requirements Determined Compliant | 2004-07-06 |
Inactive: Late MF processed | 2004-06-04 |
Revocation of Agent Request | 2004-05-14 |
Appointment of Agent Request | 2004-05-14 |
Letter Sent | 2004-03-29 |
Grant by Issuance | 2002-08-20 |
Inactive: Cover page published | 2002-08-19 |
Inactive: Final fee received | 2002-06-05 |
Pre-grant | 2002-06-05 |
Notice of Allowance is Issued | 2002-02-13 |
Notice of Allowance is Issued | 2002-02-13 |
Letter Sent | 2002-02-13 |
Inactive: Approved for allowance (AFA) | 2002-02-05 |
Amendment Received - Voluntary Amendment | 2001-12-04 |
Inactive: S.30(2) Rules - Examiner requisition | 2001-08-27 |
Classification Modified | 1998-11-24 |
Classification Modified | 1998-11-24 |
Classification Modified | 1998-11-24 |
Inactive: First IPC assigned | 1998-11-24 |
Inactive: IPC assigned | 1998-11-24 |
Inactive: IPC assigned | 1998-11-24 |
Inactive: First IPC assigned | 1998-11-24 |
Classification Modified | 1998-11-24 |
Classification Modified | 1998-11-24 |
Inactive: Acknowledgment of national entry - RFE | 1998-11-12 |
Application Received - PCT | 1998-11-09 |
All Requirements for Examination Determined Compliant | 1998-09-04 |
Request for Examination Requirements Determined Compliant | 1998-09-04 |
Application Published (Open to Public Inspection) | 1997-10-09 |
There is no abandonment history.
The last payment was received on 2002-03-26
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
Patent Fees
web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Request for examination - small | 1998-09-04 | ||
Basic national fee - small | 1998-09-04 | ||
MF (application, 2nd anniv.) - small | 02 | 1998-03-30 | 1998-09-04 |
MF (application, 3rd anniv.) - small | 03 | 1999-03-29 | 1999-01-19 |
MF (application, 4th anniv.) - small | 04 | 2000-03-29 | 2000-01-25 |
MF (application, 5th anniv.) - small | 05 | 2001-03-29 | 2001-03-07 |
MF (application, 6th anniv.) - small | 06 | 2002-04-02 | 2002-03-26 |
Final fee - small | 2002-06-05 | ||
MF (patent, 7th anniv.) - small | 2003-03-31 | 2003-03-26 | |
MF (patent, 8th anniv.) - small | 2004-03-29 | 2004-06-04 | |
Reversal of deemed expiry | 2004-03-29 | 2004-06-04 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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ROBERT H. GREENE |
Past Owners on Record |
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None |