US4419256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building insulation composition
Assignee: Delron Research and Development Corp
•
Filing: 1981-11-12
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Granted: 1983-12-06
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Expires: 2001-11-12
Abstract
Abstract A composition for insulation which may be used for reducing thermal transmission, for absorbing sound waves and for providing a fire spread barrier, and which may be sprayed on surfaces in relatively thick coats. The composition includes a blended mixture of cellulose fiber, mineral wool, boric acid and expanded silicate glass. The blended fibers are mixed with an adhesive and sprayed on a surface to be insulated, and the adhesive preferably is a fire retardant, nontoxic adhesive which remains flexible after it has dried so that expansion or contraction of the insulation or the insulated surface will not result in cracks in the insulation.
Inventors
- 👤 Richard E. Loomis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:51
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; C; C04; C04B; C04B30/00; C04B30/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
A building insulation comprising thirty-five percent (35%) to fifty-three percent (53%) by weight of cellulose fiber, three percent (3%) to five percent (5%) by weight of an acid-containing fire retardant for reducing the flammability of said cellulose, seven percent (7%) to nine percent (9%) by weight of expanded silicate glass for reducing the corrosive effect of said acid-containing fire retardant, and thirty-five percent (35%) to fifty-three percent (53%) by weight of mineral wool.
Claim 2
Dependent Claim
73 words
A building insulation comprising thirty-five percent (35%) to fifty-three percent (53%) by weight of cellulose fiber, three percent (3%) to five percent (5%) by weight of an acid-containing fire retardant for reducing the flammability of said cellulose, seven percent (7%) to nine percent (9%) by weight of expanded silicate glass for reducing the corrosive effect of said acid-containing fire retardant, and thirty-five percent (35%) to fifty-three percent (53%) by weight of mineral wool.
Claim 3
Dependent Claim
17 words
A building insulation as defined in claim 1 in which said cellulose fiber is a long-fiber cellulose.
Claim 4
Dependent Claim
16 words
A building insulation as defined in claim 2 in which said fire retardant is boric acid.
Claim 5
Dependent Claim
18 words
A building insulation as defined in claim 1 in which said mineral wood is a high-temperature mineral wool.
Claim 6
Dependent Claim
16 words
A building insulation as defined in claim 1 in which said fire retardant is boric acid.
Claim 7
Dependent Claim
17 words
A building insulation as defined in claim 4 in which said cellulose fiber is a long-fiber cellulose.
Claim 8
Dependent Claim
63 words
An insulation composition as defined in claim 5 in which said cellulose fiber and mineral wool together constitute between about eighty-six percent (86%) and about ninety percent (90%) of the total weight of the composition, expanded silicate glass constitutes about eight percent (8%) by weight of the total composition, and boric acid constitutes about four percent (4%) by weight of the total composition.
Claim 9
Dependent Claim
17 words
An insulation composition as defined in claim 7 in which said cellulose fiber is a long-fiber cellulose.
Claim 10
Dependent Claim
28 words
An insulation composition as defined in claim 8 in which said cellulose fiber and said mineral wool are present in about equal amounts by weight in the composition.
Claim 11
Dependent Claim
18 words
An insulation composition as defined in claim 9 in which said mineral wool is a high-temperature mineral wool.
Claim 12
Dependent Claim
28 words
An insulation composition as defined in claim 7 in which said cellulose fiber and said mineral wool are present in about equal amounts by weight in the composition.
Claim 13
Dependent Claim
18 words
An insulation composition as defined in claim 7 in which said mineral wool is a high-temperature mineral wool.
Claim 14
Dependent Claim
32 words
An insulation composition as defined in claim 11 in which a fireproof adhesive is mixed with said fiber, wool, acid and silicate glass for assisting in retaining the composition on a surface.
Claim 15
Dependent Claim
32 words
An insulation composition as defined in claim 7 in which a fireproof adhesive is mixed with said fiber, wool, acid and silicate glass for assisting in adhering the composition to a surface.
References Cited (Backward Citations)
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Cited
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US3983040A
Cited
US4172804A
Cited
US4203773A
Cited
US4230585A
Cited
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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) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |