Patent US1213791A successfully refreshed from Google Patents.
US3715432A
Expired / Lapsed
US
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Submicron aqueous aerosols containing lecithin
Assignee: Massachusetts Institute of Technology
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Filing: 1971-01-22
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Granted: 1973-02-06
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Expires: 1991-01-22
Abstract
Abstract Aerosols of aqueous particles of submicron diameter which are stable against evaporation and suitable to be readily transmitted to the alveoli of the lung by inspiration, may be prepared from aqueous lecithin dispersions nebulized, as by an ultrasonic nebulizer, at temperatures greater than 25* C. Lecithin aerosols thus prepared are useful for the treatment of lung disorders, and may optionally contain other therapeutic agents such as antibiotics.
Inventors
- 👤 E Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/007; A61K9/0073; A61K9/0078; C; C09; C09K; C09K3/00; C09K3/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
A composition useful for forming aqueous aerosols having particles of submicron diameter which are stable against evaporation comprising D, L, dipalmitoyl- Alpha -lecithin dispersed in an essentially aqueous sterile medium in an amount between about 100 milligrams and 5 grams of lecithin to 100 milliliters of said medium.
Claim 2
Dependent Claim
48 words
A composition useful for forming aqueous aerosols having particles of submicron diameter which are stable against evaporation comprising D, L, dipalmitoyl- Alpha -lecithin dispersed in an essentially aqueous sterile medium in an amount between about 100 milligrams and 5 grams of lecithin to 100 milliliters of said medium.
Claim 3
Dependent Claim
15 words
The composition defined by claim 1 wherein the medium is an aqueous isotonic saline solution.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |