Patent US3220409A successfully refreshed from Google Patents.
US3220409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask
Assignee: Johnson and Johnson
•
Filing: 1961-03-28
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Granted: 1965-11-30
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Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Liloia
- 👤 William H Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:23
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1107; A41D13/1138; A41D13/1146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A FIBER MASK COMPRISING A RAISED CUP SHAPED CENTRAL PORTION ADAPTED TO FIT OVER THE MOUTH AND NOSTRILS OF A WEARER AND HAVING A RELATIVELY LOW RESISTANCE TO THE FLOW OF AIR THERETHROUGH AT AIR VELOCITIES COMPARABLE TO THOSE OF NORMAL BREATHING, A RIM PORTION EXTENDING AROUND SAID RAISED CENTRAL PORTION AND A NOSE-BRIDGE-CONTACTING PORTION, THE FIBERS OF SAID RIM PORTION AND NOSE-BRIDGE-CONTACTING PORTION BEING MORE DENSELY COMPACTED THAN THE MAJOR PORTION OF THE FIBERS OF SAID RAISED CENTRAL PORTION AND ACTING TO STRENGTHEN SAID MASK, SAID RIM PORTION AND NOSE-BRIDGE-CONTACTING PORTION BEING MORE RESISTANT TO THE FLOW OF AIR AND STRUCTURALLY STRONGER THAN MOST OF SAID RAISED CENTRAL PORTION.
Claim 2
Dependent Claim
110 words
A FIBER MASK COMPRISING A RAISED CUP SHAPED CENTRAL PORTION ADAPTED TO FIT OVER THE MOUTH AND NOSTRILS OF A WEARER AND HAVING A RELATIVELY LOW RESISTANCE TO THE FLOW OF AIR THERETHROUGH AT AIR VELOCITIES COMPARABLE TO THOSE OF NORMAL BREATHING, A RIM PORTION EXTENDING AROUND SAID RAISED CENTRAL PORTION AND A NOSE-BRIDGE-CONTACTING PORTION, THE FIBERS OF SAID RIM PORTION AND NOSE-BRIDGE-CONTACTING PORTION BEING MORE DENSELY COMPACTED THAN THE MAJOR PORTION OF THE FIBERS OF SAID RAISED CENTRAL PORTION AND ACTING TO STRENGTHEN SAID MASK, SAID RIM PORTION AND NOSE-BRIDGE-CONTACTING PORTION BEING MORE RESISTANT TO THE FLOW OF AIR AND STRUCTURALLY STRONGER THAN MOST OF SAID RAISED CENTRAL PORTION.
References Cited (Backward Citations)
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |