Language selection

/ Gouvernement du Canada
Search

Patent 28750 Summary

Third-party information liability

Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.

Claims and Abstract availability

Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:

  • At the time the application is open to public inspection;
  • At the time of issue of the patent (grant).
(12) Patent: (11) CA 28750
(21) Application Number: 28750
(54) English Title: REFINING PETROLEUM
(54) French Title: RAFFINAGE DU PETROLE
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • FRASCH, HERMAN (Canada)
(73) Owners :
  • HERMAN FRASCH
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1888-03-23
(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 28750 were not found.

Claims

Note: Claims are shown in the official language in which they were submitted.

Claim lst The process of purifying Canadian and similar petroleum oils which contain sulphur compounds, whose presence gives to said oil the property of dissolving lead oxide, by distilling the same with the oxidating oxides mixed with, or dissolved in, the oil under treatment, substantially as described. 2nd The process of purifying Canadian and similar petroleum oils which contain sulphur compounds, whose presence gives the said oil the property of dissolving lead oxide, by distilling the same with the oxidating oxides mixed with, or dissolved in, the oil under treatment, and washing the distillate from such operation with sulphuric acid, substantially as described. 3rd The process of purifying Canadian and similar petroleum oils which contain sulphur compounds, whose presence gives to said oil the property of dissolving lead oxide, by subjecting the oil to the action of the oxidating oxides of the metals which form convertible sulphides, separating the oil and spent material from each other, roasting and oxidating the spent material, and treating the aforesaid oil with the revivified material, substantially as described.
Description

Note: Descriptions are shown in the official language in which they were submitted.

Sorry, the description for patent document number 28750 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 28750 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.

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee  and Payment History  should be consulted.

Event History

Description Date
Inactive: Expired (old Act Patent) latest possible expiry date 1906-03-23
Grant by Issuance 1888-03-23

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
HERMAN FRASCH
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

To view selected files, please enter reCAPTCHA code :



Sorry, no documents were found