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Patent 491941 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 491941
(21) Application Number: 491941
(54) English Title: METHODS OF MAKING BORON
(54) French Title: METHODES DE FABRICATION DE BORE
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC):
  • A61K 8/00 (2006.01)
  • B01D 67/00 (2006.01)
  • B01D 71/00 (2006.01)
  • B01J 20/00 (2006.01)
  • B01J 27/24 (2006.01)
  • B01J 39/00 (2006.01)
  • B23B 27/00 (2006.01)
  • C01B 9/08 (2006.01)
  • C01B 21/064 (2006.01)
  • C01B 32/50 (2017.01)
  • C01B 35/00 (2006.01)
  • C04B 35/00 (2006.01)
  • C07F 5/00 (2006.01)
  • C08F 226/06 (2006.01)
  • C08G 65/323 (2006.01)
  • C08J 5/20 (2006.01)
  • C09K 5/14 (2006.01)
  • C23C 16/00 (2006.01)
  • C30B 25/00 (2006.01)
  • C30B 29/00 (2006.01)
  • G21G 5/00 (2006.01)
  • G21K 5/00 (2006.01)
  • H01B 1/06 (2006.01)
  • H01B 3/00 (2006.01)
  • H01J 7/18 (2006.01)
  • H01J 27/02 (2006.01)
  • H01J 37/317 (2006.01)
  • H01L 21/00 (2006.01)
  • H01L 23/00 (2006.01)
  • H01M 8/00 (2016.01)
  • H01M 50/00 (2021.01)
(72) Inventors :
  • HUGH S. COOPER,
(73) Owners :
  • WALTER M. WEIL
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1953-04-07
(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

Sorry, the abstracts for patent document number 491941 were not found.

Claims

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Sorry, the claims for patent document number 491941 were not found.
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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Sorry, the description for patent document number 491941 was not found. Text is not available for all patent documents. The current dates of coverage are on the Currency of Information  page

Representative Drawing

Sorry, the representative drawing for patent document number 491941 was not found.

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.

Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.

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Event History

Description Date
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
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Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: IPC from PCS 2023-05-27
Inactive: Expired (old Act Patent) latest possible expiry date 1970-04-07
Grant by Issuance 1953-04-07

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
WALTER M. WEIL
Past Owners on Record
HUGH S. COOPER
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 1995-06-13 4 211
Drawings 1995-06-13 1 17
Descriptions 1995-06-13 7 367