US2773764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral fiber product
Assignee: Armstrong World Industries Inc
•
Filing: 1954-04-22
•
Granted: 1956-12-11
•
Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:17
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/18; C; C04; C04B; C04B26/00; C04B26/02; C04B26/28; D21H11/00; D21H11/02; D21H11/04; D21H13/00; D21H13/36; D21J; D21J1/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A SELF-SUSTAINING ACOUSTICAL BOARD COMPRISING NODULATED, ARTIFICALLY FORMED MINERAL FIBRS, AN AMYLACEOUS BINDER FOR THE FIBERS, MINERAL FILLER, AND AS AN AGENT FOR REDUCING THE TENDENCY OF THE MATERIAL TO SAG UNDER CONDI-
Claim 2
Dependent Claim
33 words
A SELF-SUSTAINING ACOUSTICAL BOARD COMPRISING NODULATED, ARTIFICALLY FORMED MINERAL FIBRS, AN AMYLACEOUS BINDER FOR THE FIBERS, MINERAL FILLER, AND AS AN AGENT FOR REDUCING THE TENDENCY OF THE MATERIAL TO SAG UNDER CONDI-
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |