US3557030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket-forming compositions for closure elements
Assignee: WR Grace and Co
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Filing: 1966-09-15
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Granted: 1971-01-19
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Expires: 1986-09-15
Abstract
Abstract COMPOSITIONS SUITABLE FOR USE AS GASKETS IN CONTAINER CLOSURE ELEMENTS CONSISTING OF A TWO-PHASE SYSTEM COMPOSED OF PLASTICIZED COARSE RESIN PARTICLES DISPERSED IN WATER. THICKENING AGENTS SUCH AS WATER-INSOLUBLE MA- TERIALS, E.G., SILICA GEL, OR WATER-SOLUBLE MATERIALS, E.G., CELLULOSE DERIVATIVES, MAY BE INCLUDED IN THE COMPOSITIONS.
Inventors
- 👤 Charles W Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; B29C43/32; B29C43/36; B29C43/3607; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K5/00; C08K5/04; C08K5/10; C08K5/49; C08K5/51; C08K5/52; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L67/00; C08L67/02; C08L71/00; C08L71/02; B29C43/361; B29C2043/3615; B29K; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S260/00; Y10S260/42; Y10S264/00; Y10S264/05
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |