Patent US3069157A successfully refreshed from Google Patents.
Patent US2515340A successfully refreshed from Google Patents.
US2515340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated paperboard and method of makign same
Assignee: Gardner Board and Carton Co
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Filing: 1947-04-01
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Granted: 1950-07-18
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Expires: 1967-04-01
Abstract
No abstract record available.
Inventors
- 👤 Harry C Fisher
- 👤 Brainard E Sooy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:45
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; D21J; D21J1/00; D21J1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A PROCESS OF TREATING PAPER WEBS WHICH COMPRISES PASSING A FRESHLY MADE PAPER WEB THROUGH ROLLS AND AT THE NIP THEREOF APPLYING THERETO A PLASTICIZING, FILM-FORMING, WATER-BOURNE SUBSTANCE CHEMICALLY INERT TO THE FIBERS, AND THEN WHILE RETAINING THE DAMPENED CONDITION OF THE WEB SURFACE, IMPRINTING ONTO THE WEB A COATING COMPRISING A MINERAL COATING MATERIAL AND A STARCH BINDER IN AN AQUEOUS VEHICLE, THE STEPS OF RENDERING THE SAID COATING RESISTANT TO WEB RUBBING BY ADDING A THERMOSETTING RESIN AND A CATALYST THEREOF TO PRODUCE A REACTION IN WHICH THE STARCH OF SAID COATING IS INSOLUBLIZED, SAID PROCESS INVOLVING ADDING, NOT EARLIER THAN THE APPLICATION OF SAID PLASTICIZING SUBSTANCE, SAID RESIN AND SAID CATALYST, AT LEAST ONE OF SAID LAST MENTIONED SUBSTANCES BEING IMPOSED ON THE PAPER PRIOR TO THE IMPOSITION OF SAID COATING.
Claim 2
Dependent Claim
135 words
IN A PROCESS OF TREATING PAPER WEBS WHICH COMPRISES PASSING A FRESHLY MADE PAPER WEB THROUGH ROLLS AND AT THE NIP THEREOF APPLYING THERETO A PLASTICIZING, FILM-FORMING, WATER-BOURNE SUBSTANCE CHEMICALLY INERT TO THE FIBERS, AND THEN WHILE RETAINING THE DAMPENED CONDITION OF THE WEB SURFACE, IMPRINTING ONTO THE WEB A COATING COMPRISING A MINERAL COATING MATERIAL AND A STARCH BINDER IN AN AQUEOUS VEHICLE, THE STEPS OF RENDERING THE SAID COATING RESISTANT TO WEB RUBBING BY ADDING A THERMOSETTING RESIN AND A CATALYST THEREOF TO PRODUCE A REACTION IN WHICH THE STARCH OF SAID COATING IS INSOLUBLIZED, SAID PROCESS INVOLVING ADDING, NOT EARLIER THAN THE APPLICATION OF SAID PLASTICIZING SUBSTANCE, SAID RESIN AND SAID CATALYST, AT LEAST ONE OF SAID LAST MENTIONED SUBSTANCES BEING IMPOSED ON THE PAPER PRIOR TO THE IMPOSITION OF SAID COATING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |