US2576073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricated structure comprising porous compositions of matter
Assignee: Wyeth Holdings LLC
•
Filing: 1946-01-19
•
Granted: 1951-11-20
•
Expires: 1966-01-19
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Louis E Craig
- 👤 Arthur S Nyquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:13
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01; B; B29; B29C; B29C70/00; B29C70/003; B32; B32B; B32B15/00; B32B15/02; B32B15/04; B32B15/046; B32B21/00; B32B21/04; B32B21/047; B32B27/00; B32B27/06; B32B27/065; B32B29/00; B32B29/002; B32B29/007; B32B5/00; B32B5/02; B32B5/18; B32B5/20; B32B5/22; B32B5/24; B32B5/245; B32B7/00; B32B7/04; B32B7/12; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08J9/12; C08J9/122; C08J9/35; B29K; B29K2309/00; B29K2309/08; B32B2250/00; B32B2250/40; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/023; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0264; B32B2419/00; B32B2457/00; B32B2605/00; B32B2605/003; B32B2605/18; C08J2203/00; C08J2203/02; C08J2203/04; C08J2203/06; C08J2203/18; C08J2367/00; C08J2367/06; C08J2467/00; C08J2467/06; Y; Y10; Y10S; Y10S220/00; Y10S220/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS OF MAKING A FARBICATED STUCTURE HAVING SURFACE SHEETS AND A RESINOUS INTERLAYER WHICH COMPRISES THE STEPS OF (1) MIXING (A) GROUND, EXPANDED, POROUS, LOW DENSITY, CELLULAR, CURED, WATER-INSOLUBLE RESIN OBTAINED BY POLYMERIZING A HOMOGENEOUS MIXTURE INCLUDING AN UNSATURATED ALKYD RESIN, A MATERIAL SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ESTERS OF ALLYL ALCOHOL AND A GAS-LIBERATING AGENT WITH (B) A POLYMERIZABLE MIXTURE INCLUDING AN UNSATURATED ALKYD RESIN AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ESTERS OF ALLYL ALCOHOL AND (2) POLYMERIZING THE RESULTANT MIXTURE IN SITU BETWEEN SURFACE SHEETS IMPREGNATED WITH A POLYMERIZABLE COMPOSITION, BOTH OF SAID ALKYD RESINS HAVING BEEN PREPARED BY THE ESTERIFICATION OF AN ALPHA, BETA UNSATURATED DICARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL.
Claim 2
Dependent Claim
123 words
A PROCESS OF MAKING A FARBICATED STUCTURE HAVING SURFACE SHEETS AND A RESINOUS INTERLAYER WHICH COMPRISES THE STEPS OF (1) MIXING (A) GROUND, EXPANDED, POROUS, LOW DENSITY, CELLULAR, CURED, WATER-INSOLUBLE RESIN OBTAINED BY POLYMERIZING A HOMOGENEOUS MIXTURE INCLUDING AN UNSATURATED ALKYD RESIN, A MATERIAL SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ESTERS OF ALLYL ALCOHOL AND A GAS-LIBERATING AGENT WITH (B) A POLYMERIZABLE MIXTURE INCLUDING AN UNSATURATED ALKYD RESIN AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ESTERS OF ALLYL ALCOHOL AND (2) POLYMERIZING THE RESULTANT MIXTURE IN SITU BETWEEN SURFACE SHEETS IMPREGNATED WITH A POLYMERIZABLE COMPOSITION, BOTH OF SAID ALKYD RESINS HAVING BEEN PREPARED BY THE ESTERIFICATION OF AN ALPHA, BETA UNSATURATED DICARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL.
References Cited (Backward Citations)
US1798609A
Cited
US2158033A
Cited
US2186793A
Cited
US2218474A
Cited
US2388319A
Cited
US2376653A
Cited
US2414125A
Cited
US2375960A
Cited
US2381631A
Cited
US2461761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |