US3746068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fasteners and sealants useful therefor
Assignee: 3M Co
•
Filing: 1971-08-27
•
Granted: 1973-07-17
•
Expires: 1991-08-27
Abstract
Abstract Mechanical fasteners and stable pressure-activatable adhesive system therefor based on encapsulated resin, preferably epoxy and non-volatile curative therefor, preferably an amine such as 1, 3bis-4-piperidylpropane or imidazole, the capsules and curative being contained in polar solvent-free binder which can hold system on abutment surfaces of fastener.
Inventors
- 👤 F Deckert
- 👤 G Matson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:26
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/06; F16B39/00; F16B39/22; F16B39/225; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A fastener according to claim 1 wherein said amine is 1,3-di-4-piperidylpropane.
Claim 2
Dependent Claim
11 words
A fastener according to claim 1 wherein said amine is imidazole.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |