US2819754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface coverings
Assignee: Armstrong World Industries Inc
•
Filing: 1955-04-18
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Granted: 1958-01-14
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Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Jr David A Feigley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:47
CPC Classifications
D; D06; D06N; D06N1/00; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE METHOD OF MAKING A SURFACE COVERING WHICH COMPRISES FORMING A SICCATIVE OIL LINOLEUM COMPOSITIONAPPLYING SAID COMPOSITION TO A FELTED SUPPORTING LAYER CONTAINING PROTEINACEOUS MATERIAL AS A CONTAMINANT THEREIN, AND CURING SAID COMPOSITION AT ELEVATED TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES TREATING SAID PROTEINACEOUS MATERIAL PRIOR TO SAID CURING STEP WITH A TANNING AGENT TO STABILIZE REACTIVE NITROGENEOUS GROUPS THEREON.
Claim 2
Dependent Claim
60 words
IN THE METHOD OF MAKING A SURFACE COVERING WHICH COMPRISES FORMING A SICCATIVE OIL LINOLEUM COMPOSITIONAPPLYING SAID COMPOSITION TO A FELTED SUPPORTING LAYER CONTAINING PROTEINACEOUS MATERIAL AS A CONTAMINANT THEREIN, AND CURING SAID COMPOSITION AT ELEVATED TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES TREATING SAID PROTEINACEOUS MATERIAL PRIOR TO SAID CURING STEP WITH A TANNING AGENT TO STABILIZE REACTIVE NITROGENEOUS GROUPS THEREON.
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) | 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 |