US3075943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent gaseous catalysis
Assignee: Dow Chemical Co
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Filing: 1959-09-14
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Granted: 1963-01-29
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Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Billy E Burgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:12
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD WHICH COMPRISES THE STEPS OF (1) DISPERSING THROUGHOUT A COMPOSITE REACTION SYSTEM COMPRISING AN INERT FILLER AND A CONDENSATION RESIN THERMALLY CURABLE IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ACIDIFIC MATERIAL, WHICH IS GASEOUS AT THE CURING TEMPERATURE OF THE RESIN AND WHICH, WHEN DISSOLVED IN WATER, PRODUCES AN ACID. AN INERT ADSORBENT HAVING MORE THAN 100 SQUARE METERS PER GRAM OF ADSORBING SURFACE AND HAVING ADSORBED THEREON SAID ACIDIFIC MATERIAL, WHICH IS DESORBABLE AT THE CURING TEMMPERATURE O THE RESIN; AND (2) SUBSEQUENTLY HEATING THE COMPOSITE REACTION SYSTEM AT THE CURING TEMPERATURE OF THE RESIN.
Claim 2
Independent Claim
100 words
A METHOD WHICH COMPRISES THE STEPS OF (1) DISPERSING THROUGHOUT A COMPOSITE REACTION SYSTEM COMPRISING AN INERT FILLER AND A CONDENSATION RESIN THERMALLY CURABLE IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ACIDIFIC MATERIAL, WHICH IS GASEOUS AT THE CURING TEMPERATURE OF THE RESIN AND WHICH, WHEN DISSOLVED IN WATER, PRODUCES AN ACID. AN INERT ADSORBENT HAVING MORE THAN 100 SQUARE METERS PER GRAM OF ADSORBING SURFACE AND HAVING ADSORBED THEREON SAID ACIDIFIC MATERIAL, WHICH IS DESORBABLE AT THE CURING TEMMPERATURE O THE RESIN; AND (2) SUBSEQUENTLY HEATING THE COMPOSITE REACTION SYSTEM AT THE CURING TEMPERATURE OF THE RESIN.
References Cited (Backward Citations)
US2422118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |