Patent US4672377A successfully refreshed from Google Patents.
Patent US2563478A successfully refreshed from Google Patents.
US2563478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic vulcanization of sponge
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
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Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:05
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1209; B29C35/00; B29C35/02; B29C35/08; B29K; B29K2021/00; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/23986; Y10T428/249921; Y10T428/249953
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF SECURING A FOAM RUBBER LAYER TO THE FABRIC BACKING MATERIAL OF A RUG WHICH COMPRISES DISPOSING SAID RUG WITH THE NAP PORTION EXTENDING DOWN TO EXPOSE THE FABRIC OF THE RUG, POURING FOAMED LATEX, WHILE IN AN UNCURED STATE, ONTO SAID FABRIC TO FORM A LAYER OF SUBSTANTIAL THICKNESS OVERLYING SAID MATERIAL, CONFINING SAID FOAMED LATEX AND RUB BETWEEN A PAIR OF PARALLEL MOLD SURFACE, AND APPLYING A HIGH FREQUENCY FIELD TO SAID MOLD SURFACES.
Claim 2
Independent Claim
78 words
THE METHOD OF SECURING A FOAM RUBBER LAYER TO THE FABRIC BACKING MATERIAL OF A RUG WHICH COMPRISES DISPOSING SAID RUG WITH THE NAP PORTION EXTENDING DOWN TO EXPOSE THE FABRIC OF THE RUG, POURING FOAMED LATEX, WHILE IN AN UNCURED STATE, ONTO SAID FABRIC TO FORM A LAYER OF SUBSTANTIAL THICKNESS OVERLYING SAID MATERIAL, CONFINING SAID FOAMED LATEX AND RUB BETWEEN A PAIR OF PARALLEL MOLD SURFACE, AND APPLYING A HIGH FREQUENCY FIELD TO SAID MOLD SURFACES.
References Cited (Backward Citations)
US2106385A
Cited
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Cited
US2271058A
Cited
US2217137A
Cited
US2434573A
Cited
US2441548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |