Patent US2249339A successfully refreshed from Google Patents.
Patent US2819986A successfully refreshed from Google Patents.
US2819986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low frictional drag coated paper products and method of preparation thereof
Assignee: Fibreboard Paper Products Corp
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Filing: 1954-07-26
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Granted: 1958-01-14
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 David G Edwards
- 👤 Melvin C Edlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:34
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/001; D21H23/00; D21H23/02; D21H23/22; D21H23/66; D21H23/68; D21J; D21J1/00; D21H19/00; D21H19/10; D21H19/14; D21H19/18; D21H19/20; D21H19/22; D21H19/24; D21H19/80; D21H19/82; D21H19/824; D21H21/00; D21H21/14; D21H23/32; D21H23/42; D21H23/52; D21H23/56; D21H23/58; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF REDUCING FRICTIONAL RESISTANCE BETWEEN A SURFACE AND AN ADJACENT SHEETED PAPER BLANK HAVING A WATER INSOLUBLE SUBSTANTIALLY SOLID PROTECTIVE COATING COMPOSED PRIMARILY OF WAX IN ORDER TO ENHANCE RELATIVE MOVEMENT BETWEEN SAID SURFACE AND SAID COATING AND TO PROTECT SAID COATING AGAINST SCUFFING, WHICH CONSISTS ESSENTIALLY IN FORMING ON SUCH COATING OF SAID PAPER BLANK A FILM OF A LUBRICATING AGENT BY APPLYING TO SAID COATING AN ORGANIC LIQUID COMPOUND WHICH IS ESSENTIALLY INSOLUBLE IN AND SOFTER THAN SAID COATING AND WHICH IS SUBSTANTIALLY NON-VOLATILE, AND RETAINING SAID ORGANIC LIQUID LUBRICATING AGENT AS A DISCRETE FILM ON SUCH COATING TO PROVIDE REDUCED FRICTIONAL RESISTANCE TO MOVEMENT BETWEEN CONTACTING AREAS OF SUCH COATED PAPER BLANK AND TO REDUCE CHATTERING AND FRICTIONAL RESISTANCE BETWEEN SAID COATED PAPER BLANK AND MACHINERY FOR HANDLING SUCH PAPER BLANK.
Claim 2
Independent Claim
136 words
THE METHOD OF REDUCING FRICTIONAL RESISTANCE BETWEEN A SURFACE AND AN ADJACENT SHEETED PAPER BLANK HAVING A WATER INSOLUBLE SUBSTANTIALLY SOLID PROTECTIVE COATING COMPOSED PRIMARILY OF WAX IN ORDER TO ENHANCE RELATIVE MOVEMENT BETWEEN SAID SURFACE AND SAID COATING AND TO PROTECT SAID COATING AGAINST SCUFFING, WHICH CONSISTS ESSENTIALLY IN FORMING ON SUCH COATING OF SAID PAPER BLANK A FILM OF A LUBRICATING AGENT BY APPLYING TO SAID COATING AN ORGANIC LIQUID COMPOUND WHICH IS ESSENTIALLY INSOLUBLE IN AND SOFTER THAN SAID COATING AND WHICH IS SUBSTANTIALLY NON-VOLATILE, AND RETAINING SAID ORGANIC LIQUID LUBRICATING AGENT AS A DISCRETE FILM ON SUCH COATING TO PROVIDE REDUCED FRICTIONAL RESISTANCE TO MOVEMENT BETWEEN CONTACTING AREAS OF SUCH COATED PAPER BLANK AND TO REDUCE CHATTERING AND FRICTIONAL RESISTANCE BETWEEN SAID COATED PAPER BLANK AND MACHINERY FOR HANDLING SUCH PAPER BLANK.
References Cited (Backward Citations)
USRE17605E
Cited
US1688478A
Cited
US1769633A
Cited
US1839868A
Cited
US2017449A
Cited
US2167711A
Cited
US2642366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |