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Patent 849094 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 849094
(21) Application Number: 849094
(54) English Title: APPARATUS AND PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYAMIDES
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC):
  • B01J 19/00 (2006.01)
  • B29B 7/00 (2006.01)
  • C08F 2/00 (2006.01)
  • C08G 85/00 (2006.01)
(72) Inventors :
  • JAMES C. BRYAN,
(73) Owners :
  • E.I. DU PONT DE NEMOURS AND COMPANY
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1970-08-11
(22) Filed Date:
Availability of licence: N/A
Dedicated to the Public: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

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Claims

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Text is not available for all patent documents. The current dates of coverage are on the Currency of Information  page

Description

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Representative Drawing

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Administrative Status

2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.

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Event History

Description Date
Inactive: IPC from PCS 2021-12-11
Inactive: IPC from PCS 2021-12-11
Inactive: IPC from PCS 2021-12-11
Inactive: IPC from PCS 2021-12-11
Inactive: Expired (old Act Patent) latest possible expiry date 1987-08-11
Grant by Issuance 1970-08-11

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
E.I. DU PONT DE NEMOURS AND COMPANY
Past Owners on Record
JAMES C. BRYAN
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

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Document
Description 		 Date
(yyyy-mm-dd) 		 Number of pages   Size of Image (KB) 
Claims 1994-10-04 4 135
Drawings 1994-10-04 2 42
Descriptions 1994-10-04 16 669