US4114284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sachets particularly for use in clothes driers
Assignee: Henkel AG and Co KGaA
•
Filing: 1977-01-25
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Granted: 1978-09-19
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Expires: 1997-01-25
Abstract
Abstract A sachet consisting of a closed packet of a semipermeable to gas plastic film containing an odor-producing composition of a fragrant nature absorbed on an inert absorbent carrier, particularly for use in household clothes driers.
Inventors
- 👤 Rudolf Weber
- 👤 Winfried Pochandke
- 👤 Karl Schwadtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:18
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/047; A; A45; A45D; A45D37/00; D; D06; D06F; D06F58/00; D06F58/20; D06F58/203; D06F58/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
The method of drying and scenting damp washed laundry consisting of mechanically tumbling the same in an enclosed zone while passing hot air therethrough at a temperature of from 35° C. to 100° C. for a time sufficient to dry the same in the presence of a sachet consisting of a closed packet of a semi-permeable-to-gas polyethylene film having a greater permeability to gas at temperatures in the range of 35° C. to 100° C., than lower temperatures, containing an odor-producing composition of a fragrant nature absorbed on an inert absorbent carrier, and thereafter cooling said hot dry and scented laundry.
Claim 2
Independent Claim
101 words
The method of drying and scenting damp washed laundry consisting of mechanically tumbling the same in an enclosed zone while passing hot air therethrough at a temperature of from 35° C. to 100° C. for a time sufficient to dry the same in the presence of a sachet consisting of a closed packet of a semi-permeable-to-gas polyethylene film having a greater permeability to gas at temperatures in the range of 35° C. to 100° C., than lower temperatures, containing an odor-producing composition of a fragrant nature absorbed on an inert absorbent carrier, and thereafter cooling said hot dry and scented laundry.
Claim 3
Dependent Claim
18 words
The sachet of claim 1, wherein said plastic film has a thickness of from 0.05 to 0.15 mm.
Claim 4
Dependent Claim
13 words
The sachet of claim 1 wherein said odor-producing composition is a perfume oil-emulsion.
Claim 5
Dependent Claim
19 words
The sachet of claim 3 wherein said perfume oil-emulsion contains from 25% to 50% by weight of perfume oils.
Claim 6
Dependent Claim
95 words
A sachet for use in household clothes driers consisting of a welded-closed packet of polyethylene film having a thickness of from 0.05 to 0.15 mm said polyethylene film being semi-permeable-to-gas and having a greater permeability to gas at temperatures in the range of from 35° C. to 100° C., than at lower temperatures, containing a perfume oil-emulsion containing from 25% to 50% of perfume oils, absorbed on an inert absorbent carrier, said closed sachet being flat and rectangular with side lengths of 5 to 30 cm and a total weight of 5 to 20 gm.
Claim 7
Dependent Claim
95 words
A sachet for use in household clothes driers consisting of a welded-closed packet of polyethylene film having a thickness of from 0.05 to 0.15 mm said polyethylene film being semi-permeable-to-gas and having a greater permeability to gas at temperatures in the range of from 35° C. to 100° C., than at lower temperatures, containing a perfume oil-emulsion containing from 25% to 50% of perfume oils, absorbed on an inert absorbent carrier, said closed sachet being flat and rectangular with side lengths of 5 to 30 cm and a total weight of 5 to 20 gm.
Claim 8
Dependent Claim
26 words
The sachet of claim 5 wherein said inert absorbent carrier is selected from the group consisting of fleeces, textile materials, felt, paper, solid foams and sponges.
Claim 9
Dependent Claim
12 words
The sachet of claim 5 wherein said closed packet is a square.
Claim 10
Dependent Claim
15 words
The sachet of claim 5 wherein said inert absorbent carrier is a flat polyacrylamide fleece.
Claim 11
Dependent Claim
24 words
The sachet of claim 5 wherein said polyethylene film is paper lined where the paper is permeable-to-gas and on the outside of said sachet.
References Cited (Backward Citations)
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Cited
US3858807A
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US4014105A
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US3706140A
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US4004685A
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US3947971A
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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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |