Granted Patent B2

US 8,721,962 · App. 13/713,209 · Granted May 13, 2014

Inventors: Ricky Ah-Man Woo (Hamilton, OH); Mario Alonso (Loveland, OH); John Philip Hecht (West Chester, OH); Steven Reece (Hamilton, OH); Frank Andrej Kvietok (Cincinnati, OH); Eileen Marie St. Pierre (Cincinnati, OH); Zaiyou Liu (West Chester, PA); Christine Marie Readnour (Ft. Mitchell, KY); Carl Eric Kaiser (Lebanon, OH); Susan Eleanor Baillely (Cincinnati, OH); Sion Agami (Mason, OH)

Assignee: The Procter & Gamble Company

Abstract

Claims (23)

1. A method of emitting a perfume from a heated-wick device comprising the steps:

a) providing said heated-wick device comprising a first perfume composition in fluid communication with a first wick and a second perfume composition in fluid communication with a second wick;

b) applying heat to said first wick;

c) reducing the heat to said first wick;

d) maintaining reduced heat to said first wick for about 20 minutes to about 48 hours;

e) applying heat to said second wick;

f) reducing the heat to said second wick; and

g) maintaining reduced heat to said second wick for about 20 minutes to about 48 hours.

2. The method according to claim 1 , wherein the wick temperature sufficient to increase the rate of volatilization of at least one component of said first perfume composition is greater than or equal to about 40° C.

3. The method according to claim 2 , wherein the wick temperature sufficient to increase the rate of volatilization of the at least one component of said first perfume composition is greater than or equal to about 60° C.

4. The method according to claim 3 , wherein the wick temperature sufficient to increase the rate of volatilization of the at least one component of said first perfume composition is greater than or equal to about 80° C.

5. The method according to claim 1 , wherein the wick temperature sufficient to decrease the rate of volatilization of at least one component of said first perfume composition is less than or equal to about 40° C.

6. The method according to claim 1 , wherein the difference between wick temperatures at b) and e) is from about 10° C. to about 100° C.

7. The method according to claim 6 , wherein the difference between wick temperatures at b) and e) is from about 20° C. to about 80° C.

8. The method according to claim 7 , wherein the difference between wick temperatures at b) and e) is from about 40° C. to about 60° C.

9. The method according to claim 1 , wherein steps b) through g) are each repeated at least two times.

10. The method according to claim 1 , wherein in said heating step of e), the temperature of said second wick is higher than in the previous heating step of b).

11. The method according to claim 1 , wherein performance of steps b) and c) overlaps for a period of from about 0.1% to about 25% of the duration of step e).

12. The method according to claim 1 , wherein the performance of steps b) and c) does not overlap.

13. The method according to claim 12 , wherein there is a gap between performance of steps b) and e) for a period of from about 0.1% to about 100% of the duration of step b).

14. The method according to claim 1 , wherein the reduced heat to the first wick is maintained for a time sufficient to allow for back-flow of all components of the first perfume composition.

15. The method according to claim 1 , wherein step b) further comprises applying a fan to the first wick for enhancing release of at least one component of the first perfume composition.

16. The method according to claim 1 , wherein said first and second wick have an average pore size of about 50-150 microns.

Continuity (13)