US4053443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing compound
Assignee: Individual
•
Filing: 1976-07-20
•
Granted: 1977-10-11
•
Expires: 1996-07-20
Abstract
Abstract A sealing compound for pipe joints which has a pastelike consistency and is formulated from inert filler particles, an aqueous dispersion of fluorocarbon particles, an acidic gelling agent and an alkali activator for the gelling agent in a relative quantity producing a neutral pH, the activator including an ingredient which imparts freeze-thaw stability to the compound.
Inventors
- 👤 Franklin G. Reick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1009; C08; C08K; C08K13/00; C08K13/02; C09D; C09D5/00; C09D5/34; C09K2003/1034; C09K2003/1071; C09K2200/00; C09K2200/02; C09K2200/0217; C09K2200/0234; C09K2200/0239; C09K2200/0243; C09K2200/0247; C09K2200/0265; C09K2200/04; C09K2200/0458
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
A sealing composition comprising an inert filler, an aqueous dispersion of polymers of tetrafluoroethylene lubricating particles in which particles of colloidal size are intermingled with particles of microscopic size, an acidic gelling agent, and an alkali activator for the gelling agent, said activator including an ingredient which renders the compound freeze-thaw stable.
Claim 2
Dependent Claim
52 words
A sealing composition comprising an inert filler, an aqueous dispersion of polymers of tetrafluoroethylene lubricating particles in which particles of colloidal size are intermingled with particles of microscopic size, an acidic gelling agent, and an alkali activator for the gelling agent, said activator including an ingredient which renders the compound freeze-thaw stable.
Claim 3
Dependent Claim
16 words
A sealing composition as set forth in claim 1, wherein said inert filler includes mica particles.
Claim 4
Dependent Claim
18 words
A sealing composition as set forth in claim 2, wherein said mica particles are intermingled with silica particles.
Claim 5
Dependent Claim
18 words
A sealing composition as set forth in claim 3, wherein said inert filler further includes titanium oxide powder.
Claim 6
Dependent Claim
18 words
A sealing composition as set forth in claim 1, further including a peptizing agent to disperse the filler.
Claim 7
Dependent Claim
17 words
A sealing composition as set forth in claim 1, wherein said gelling agent is a water-soluble resin.
Claim 8
Dependent Claim
17 words
A sealing composition as set forth in claim 1, wherein said ingredient in said activator is monoethanolamine.
Claim 9
Dependent Claim
16 words
A sealing composition as set forth in claim 7, wherein said activator further includes sodium hydroxide.
References Cited (Backward Citations)
US2976203A
Cited
GB997096A
Cited
US3772249A
Cited
US3862066A
Cited
US3823108A
Cited
US3879302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |