US3081191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doctor blade
Assignee: Mead Corp
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Filing: 1959-02-18
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Granted: 1963-03-12
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Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 John W Smith
- 👤 Elwin J Biorseth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/32; D21H23/34; D21H23/36; B; B05; B05C; B05C11/00; B05C11/02; B05C11/023; B05C11/028; B05C11/04; B05C11/047; B41; B41F; B41F9/00; B41F9/06; B41F9/08; B41F9/10; B41F9/1072; D21H5/00; D21H5/0005; D21H5/0012; D21H5/0015; D21H5/0017
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
THE METHOD OF EVENLY DISTRIBUTING A LAYER OF COATING MATERIAL ON A TRAVELING WEB COMPRISING THE STEPS OF MOVING SAID WEB THROUGH A NIP CONTAINING A SUPPLY OF FLUID COATING MATERIAL TO CAUSE SAID NIP TO APPLY A LAYER OF SAID COATING MATERIAL ON SAID WEB, AND REMOVING IRREGULARITIES IN SAID LAYER AS SAID LAYER PASSES SAID NIP BY A FLEXIBLE SMOOTH UNSUPPORTED LIP TRAILING BEYOND SAID NIP, SAID LIP ADHERING TO AND BEING DRAWN AGAINST THE SURFACE OF SAID FLUID COATING MATERIAL BY FORCES OF HYDRAULIC ATTRACTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |