US4334941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple glazed unit bonded with silicate cement
Assignee: PPG Industries Inc
•
Filing: 1981-07-27
•
Granted: 1982-06-15
•
Expires: 2001-07-27
Abstract
Abstract A multiple glazed unit wherein glass sheets are bonded together and held in spaced relationship by means of an alkali silicate based cement composition is disclosed.
Inventors
- 👤 James E. Neely, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:19
CPC Classifications
C; C09; C09J; C09J1/00; C09J1/02; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C09D; C09D1/00; C09D1/02; C09J5/00; C09J5/06; E; E06; E06B; E06B3/00; E06B3/66; E06B3/663; E06B3/66309; E06B3/66333
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A method for bonding two sheets of glass in spaced relationship comprising the steps of: a. mixing sodium silicate, potassium silicate and B-form of aluminum trimetaphosphate with water to from a cement composition; b. applying said cement composition between two spaced glass sheets to be bonded; c. exposing said cement composition to sufficient temperature for sufficient time to dry and cure the cement composition, thereby bonding said glass sheets in spaced relationship.
Claim 2
Independent Claim
72 words
A method for bonding two sheets of glass in spaced relationship comprising the steps of: a. mixing sodium silicate, potassium silicate and B-form of aluminum trimetaphosphate with water to from a cement composition; b. applying said cement composition between two spaced glass sheets to be bonded; c. exposing said cement composition to sufficient temperature for sufficient time to dry and cure the cement composition, thereby bonding said glass sheets in spaced relationship.
Claim 3
Dependent Claim
14 words
The method according to claim 1, wherein the cement composition further comprises a filler.
Claim 4
Dependent Claim
21 words
The method according to claim 2, wherein said filler is selected from the group consisting of talc, silica and mixtures thereof.
Claim 5
Dependent Claim
47 words
An article of manufacture which comprises: a. at least two glass sheets in spaced relationship; b. a cement composition consisting essentially of sodium silicate, potassium silicate and B-form of aluminum trimetaphosphate, wherein said glass sheets are bonded together and held in spaced relationship by said cement composition.
Claim 6
Dependent Claim
47 words
An article of manufacture which comprises: a. at least two glass sheets in spaced relationship; b. a cement composition consisting essentially of sodium silicate, potassium silicate and B-form of aluminum trimetaphosphate, wherein said glass sheets are bonded together and held in spaced relationship by said cement composition.
Claim 7
Dependent Claim
14 words
An article according to claim 4, wherein said cement composition further comprises a filler.
Claim 8
Dependent Claim
21 words
An article according to claim 5, wherein said filler is selected from the group consisting of talc, silica and mixtures thereof.
References Cited (Backward Citations)
US3445257A
Cited
US3454410A
Cited
US3930876A
Cited
US3943231A
Cited
US3919023A
Cited
US4173668A
Cited
US4205104A
Cited
US4149348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |