US2735818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scale removal
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:36
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A COMPOSITION FOR DESCALING A SURFACE COMPRISING BY WEIGHT IN ADMIXTURE FROM 0.2 TO 0.8 PER CENT OF AN ALKALI METAL SILICATE, FROM 0.3 TO 25 PER CENT OF A GELLING AGENT SELECTED FROM THE GROUP CONSISTING OF PECTIN, GUM KARAYA, METHYL CELLULOSE, IRISH MOSS, PSYLLIUM SEED, GUM GHATTI, GUM PERSHIR, GUM SHIRAZ, FROM 6 TO 30 PER CENT OF A FRAGMENTED FIBROUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF GROUND LEATHER, SPONGE, WOOD, PAPER, COTTON, BARK, NUT SHELLS, PEAT, CORN COB, THE BALANCE BEING AQUEOUS HYDROCHLORIC ACID CONTAINING FROM 5 TO 30 PER CENT OF HCL.
Claim 2
Dependent Claim
97 words
A COMPOSITION FOR DESCALING A SURFACE COMPRISING BY WEIGHT IN ADMIXTURE FROM 0.2 TO 0.8 PER CENT OF AN ALKALI METAL SILICATE, FROM 0.3 TO 25 PER CENT OF A GELLING AGENT SELECTED FROM THE GROUP CONSISTING OF PECTIN, GUM KARAYA, METHYL CELLULOSE, IRISH MOSS, PSYLLIUM SEED, GUM GHATTI, GUM PERSHIR, GUM SHIRAZ, FROM 6 TO 30 PER CENT OF A FRAGMENTED FIBROUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF GROUND LEATHER, SPONGE, WOOD, PAPER, COTTON, BARK, NUT SHELLS, PEAT, CORN COB, THE BALANCE BEING AQUEOUS HYDROCHLORIC ACID CONTAINING FROM 5 TO 30 PER CENT OF HCL.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |