US4036360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package having dessicant composition
Assignee: Vistatech Corp
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Filing: 1975-11-12
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Granted: 1977-07-19
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Expires: 1995-11-12
Abstract
Abstract A package comprising a dessicant material consisting essentially of 1 a dessicant and 2 tough, film-forming, resin having a high moisture vapor transmission rate. A prepolymerized polyurethane is particularly useful. The material is of particular value as a package insert - e.g. with film or cameras or as a coating material which can be utilized on equipment to be protected or, most advantageously, on the interior walls of packaging boxes and the like.
Inventors
- 👤 Robert J. Deffeyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:29
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/266; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/25; Y10T428/258; Y10T428/259; Y10T428/31504; Y10T428/31551; Y10T428/31609
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A dessicant composition of the type adapted to absorb moisture in packing applications comprising at least 20% of a particulate dessicant material and b. as a binder therefor, an effective quantity of a organic resin comprising at least about 50% of a prepolymerized polyurethane resin having an MVT value of at least 40 grams per 24 hours per 100 in 2 , and wherein said polyurethane has the following minimal physical characteristics: Tensile strength -- 1000 psi and Elongation -- 200%.
Claim 2
Dependent Claim
81 words
A dessicant composition of the type adapted to absorb moisture in packing applications comprising at least 20% of a particulate dessicant material and b. as a binder therefor, an effective quantity of a organic resin comprising at least about 50% of a prepolymerized polyurethane resin having an MVT value of at least 40 grams per 24 hours per 100 in 2 , and wherein said polyurethane has the following minimal physical characteristics: Tensile strength -- 1000 psi and Elongation -- 200%.
Claim 3
Dependent Claim
16 words
A dessicant composition as defined in claim 1 comprising at least 60% by volume of dessicant.
Claim 4
Dependent Claim
21 words
A composition as defined in claim 2 wherein said MVT value is between 75 and 100 grams per 100 square inches.
Claim 5
Dependent Claim
23 words
A composition as defined in claim 1 wherein said elongation is at least 100% and said tensile strength is at least 6,000 psi.
Claim 6
Dependent Claim
15 words
A composition as defined in claim 1 having an MVT value of at least 50.
Claim 7
Dependent Claim
17 words
A package comprising, adherent to an interior surface thereof a dessicant composition as defined in claim 1.
Claim 8
Dependent Claim
17 words
A package comprising, loosely contained therein, a dessicant article formed of the composition defined in claim 1.
Claim 9
Dependent Claim
22 words
A dessicant sheet comprising a composition as defined in claim 1 and said composition having an MVT value of over about 50.
Claim 10
Dependent Claim
23 words
A sheet as defined in claim 8 wherein said elongation is at least 100% and said tensile strength is at least 6,000 psi.
Claim 11
Dependent Claim
31 words
A process for making a dust-free dessicant composition comprising mixing said dessicant in a prepolymerized polyurethane binder, and solidifying said binder as defined in claim 1 to form said dust-free composition.
References Cited (Backward Citations)
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US3326810A
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US3622526A
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US3874904A
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US3642044A
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US3704806A
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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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |