Patent US4044773A successfully refreshed from Google Patents.
US4044773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold therapeutic package
Assignee: Individual
•
Filing: 1975-08-27
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Granted: 1977-08-30
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Expires: 1995-08-27
Abstract
Abstract Two sheets of polyurethane film are sealed together to form a hollow interior within which water can be frozen into a layer thin enough to be cracked into small ice fragments. The package containing cracked ice is applied to the area to be treated.
Inventors
- 👤 Henry Clay Baldwin, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:19
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/10; A61F2007/0001; F; F28; F28D; F28D20/00; F28D2020/0004; F28D2020/0008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
The method of using a cold therapeutic package for local treatment, said package having a longitudinal axis, comprising the steps of forming a generally flat layer of ice between sheets of polyurethane film materials; fragmenting the layer of ice into a plurality of small, finely subdivided, randomly shaped and sized particles; applying the package about an area to be treated; and conforming the film materials and the fragmented particles to the contours of the area to be treated.
Claim 2
Independent Claim
78 words
The method of using a cold therapeutic package for local treatment, said package having a longitudinal axis, comprising the steps of forming a generally flat layer of ice between sheets of polyurethane film materials; fragmenting the layer of ice into a plurality of small, finely subdivided, randomly shaped and sized particles; applying the package about an area to be treated; and conforming the film materials and the fragmented particles to the contours of the area to be treated.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the fragmenting is accomplished by rolling the film materials along the longitudinal axis.
Claim 4
Dependent Claim
27 words
The method of claim 2 wherein further fragmenting is accomplished by rolling the film materials along an axis that is angularly offset from the said longitudinal axis.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein the fragmenting is accomplished by striking the film material against a hard edge.
Claim 6
Dependent Claim
23 words
The method of claim 4 wherein the striking is repeated until the layer is broken sufficiently to form the small, randomly shaped particles.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |