US2657153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating ceramic and masonry products
Assignee: Burns and Russell Co
•
Filing: 1948-06-04
•
Granted: 1953-10-27
•
Expires: 1968-06-04
Abstract
No abstract record available.
Inventors
- 👤 Alexander H Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:03
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/48; C04B41/4826; C04B41/4811; Y; Y10; Y10S; Y10S52/00; Y10S52/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A PROCESS OF COATING A SURFACE OF A SOMEWHAT POROUS MOLDED MASONRY PRODUCT TO FORM A RELATIVELY THIN LAYER BONDED THERETO AND PROVIDED WITH A HARD SMOOTH OUTER SURFACE WHICH COMPRISES IN CONTINUOUS SUCCESSION SPRAYING ON THE PRODUCT SURFACE WHILE SAID SURFACE IS HEATED TO A TEMPERATURE OF THE ORDER OF 125 TO 250* F. A LIGHT MIST COATING OF A LIQUID COMPOSITION INCLUDING A SOLUTION OF A HEAT HARDENABLE THERMO-SETTING RESIN IN A VOLATILE SOLVENT, ALLOWING FOR NO MORE THAN A FEW MINUTES SAID RESIN TO PARTIALLY CURE AND THE SOLVENT IN SAID COMPOSITION TO EVAPORATE TO FORM A THIN PARTIALLY CURED FILM WHICH SEALS AT LEAST MOST OF THE PORES IN THE PRODUCT SURFACE, IMMEDIATELY THEREAFTER AND WHILE THE SURFACE IS STILL HEATED AND SAID FILM IS ONLY PARTIALLY CURED APPLYING ONTO SAID FILM A HEAVIER COATING OF LIQUID THERMO-SETTING RESIN COMPOSITION COMPATIBLE WITH SAID FILM, AND SUBJECTING THE COATED PRODUCT TO SUFFICIENT HEAT TO PRODUCE A FINAL HARDENING AND BONDING OF THE COMPOSITE COATING.
Claim 2
Dependent Claim
167 words
A PROCESS OF COATING A SURFACE OF A SOMEWHAT POROUS MOLDED MASONRY PRODUCT TO FORM A RELATIVELY THIN LAYER BONDED THERETO AND PROVIDED WITH A HARD SMOOTH OUTER SURFACE WHICH COMPRISES IN CONTINUOUS SUCCESSION SPRAYING ON THE PRODUCT SURFACE WHILE SAID SURFACE IS HEATED TO A TEMPERATURE OF THE ORDER OF 125 TO 250* F. A LIGHT MIST COATING OF A LIQUID COMPOSITION INCLUDING A SOLUTION OF A HEAT HARDENABLE THERMO-SETTING RESIN IN A VOLATILE SOLVENT, ALLOWING FOR NO MORE THAN A FEW MINUTES SAID RESIN TO PARTIALLY CURE AND THE SOLVENT IN SAID COMPOSITION TO EVAPORATE TO FORM A THIN PARTIALLY CURED FILM WHICH SEALS AT LEAST MOST OF THE PORES IN THE PRODUCT SURFACE, IMMEDIATELY THEREAFTER AND WHILE THE SURFACE IS STILL HEATED AND SAID FILM IS ONLY PARTIALLY CURED APPLYING ONTO SAID FILM A HEAVIER COATING OF LIQUID THERMO-SETTING RESIN COMPOSITION COMPATIBLE WITH SAID FILM, AND SUBJECTING THE COATED PRODUCT TO SUFFICIENT HEAT TO PRODUCE A FINAL HARDENING AND BONDING OF THE COMPOSITE COATING.
References Cited (Backward Citations)
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US1502501A
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US1721367A
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US2061352A
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US2365658A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |