Patent US755866A successfully refreshed from Google Patents.
Patent US2802734A successfully refreshed from Google Patents.
US2802734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Media for dispersing glass fibers
Assignee: AMF Inc
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Filing: 1954-12-23
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Granted: 1957-08-13
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Expires: 1974-12-23
Abstract
No abstract record available.
Inventors
- 👤 Bandel David
- 👤 William K W Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:26
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/1254; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H17/00; D21H17/63; D21H17/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD OF FORMING AN AQUEOUS ACID DISPERSION OF GLASS FIBERS FOR PAPER MAKING WHICH COMPRISES BEATING SAID FIBERS IN AN AQUEOUS MEDIUM BROUGHT TO A PH BETWEEN 2.5 AND 4.5 BEFORE BEATING BY THE PRESENCE OF AN ORGANIC POLYACID.
Claim 2
Independent Claim
40 words
A METHOD OF FORMING AN AQUEOUS ACID DISPERSION OF GLASS FIBERS FOR PAPER MAKING WHICH COMPRISES BEATING SAID FIBERS IN AN AQUEOUS MEDIUM BROUGHT TO A PH BETWEEN 2.5 AND 4.5 BEFORE BEATING BY THE PRESENCE OF AN ORGANIC POLYACID.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |