230 F.2d 426 | C.C.P.A. | 1956
delivered tRe opinion of the court:
This is an appeal from the decision of the Board of Appeals of the. United States Patent Office affirming the final rejection by the Primary Examiner of claims 13 and 14 of appellants’ application, No. 784,430, for a patent on a sterilized container and method of mating the same. The appealed claims, drawn to the container, and rejected on the ground of lack of invention over the prior art, are as follows:
IS. A sanitary package of fluid-tight containers comprising in rolled form a length of seamless tubing of extruded plastic heat sealable material having opposed inner surfaces which are in sterilized condition, said tubing having a series of longitudinally spaced transverse seals autogenously bonded by heat providing a plurality of hermetically sealed pockets whereby said tubing is adapted to be severed between seals to obtain individual containers.
14. A sanitary package of fluid-tight containers comprising a length- of tubing in empty flattened condition, said tubing being formed of impermeable heat sealable film material having opposed inner wall surfaces which are in sterilized condition, said tubing having a series of longitudinally spaced narrow, transverse heat seals each extending all the way across said flattened tubing and dividing the same into an extended series of interconnected hermetically sealed containers which-are adapted to be maintained with the interior wall surfaces thereof in sterile condition until the tubing is severed between seals to disconnect the individual containers.
The references relied on are:
Caufield, 1,058,658, April 8, 1913.
Travis, 1,357,128, October 26, 1920.
Wright, 2,023,829, December 10, 1935.
Waters, 2,125,758, August 2, 1938.
Ward, 2,197,845, April 23, 1940.
Hohl et al., 2,233,704, March 4,1941.
Lloyd, 2,488,212, November 15, 1949.
Appellants’ application relates to the production of a series- of integrally connected containers of transparent thermoplastic sheet material. The process discloses a continuous tube of such material extruded from a die, cooled, and then passed between flattening rollers. The flattened tube, in the form of a strip, is then passed between a pair of rolls carrying heated elements which seal the tube transversely at regular intervals, thus forming a connected series of completely sealed pockets -which are womid upon a roll. Cutting means are provided for severing the strip when a unit containing the desire^ number of pockets has been formed. During the formation of the extruded tube, hot air is forced into it, thus sterilizing the interior of the tube and hence the interior of the closed pockets formed from the tube.
The Waters patent shows the production of a series of bags from a strip of thermoplastic material. The material is fed from a roll and passed between shaping and sealing rolls which results in a continuous tube having its longitudinal seam heat-sealed so as to be air-tight. The tube thus formed passes between rolls, one of which is provided with a heated portion which seals the tube transversely to produce a series of connected containers. Those containers, however, are not stored in collected form, as in appellants’ process, but are separated from each other by a cutting device shortly after they are formed.
The Hohl et al. patent discloses a process in which a series of bags are formed from a continuous tube by transverse heat sealing at spaced intervals. The patent states that upon completion of the sealing the tube may be cut transversely to form individual containers.
• The Travis patent shows an arrangement in which each of a series of small surgical appliances is enclosed in a sealed tissue paper envelope and then sterilized. The envelopes are then spaced longitudinally along the longitudinal axis of a sheet of wrapping material which is folded over them and sealed longitudinally as well as transversely at intervals to form pockets enclosing the appliances and their tissue paper envelopes. With such arrangement the appliances may be removed individually by separating them at the center of the transverse seals.
The patents to Wright, Ward, and Caulfield were cited to show the broad idea of storing a series of connected receptacles in the form of a rolled strip from which they may be separated as desired.
The Lloyd patent was cited as showing a seamless tube formed of extruded thermoplastic material.
Appealed claim 14 was rejected on Waters in view of Hohl et al. and Travis. The claim presents two features of distinction over Waters, namely, the statement that the series of containers were maintained in strip form, whereas Waters separates each container from the strip as soon as it is formed; and the limitation that the interiors of the containers are sterilized, which is not suggested by Waters.
Appellants strongly emphasize the fact that their containers are designed to serve as disposable nursing units and, as such, fill a long-felt want in a convenient and economical manner. Not only are the appealed claims not‘limited in any way to the use to which the claimed packages are to be put, but it is well settled that claims drawn to structure must distinguish from the prior art in terms of structure rather than function. In re Carr, 28 C. C. P. A. (Patents) 1240, 120
The structural features principally relied on by appellants are the provision for a series of empty containers having their inner walls initially sterilized, and hermetic sealing of the containers so that they remain sterile until used.
It was the opinion of the Board of Appeals that the Hohl et al. patent discloses the idea of forming a series of containers in strip form prior to serving the strip to form.individual containers. We think that conclusion is sound since the patentees describe the formation of a series of heat seals at spaced points along the tube, and then state that “upon the completion of this heat-sealing, the endless tube may be cut transversely along lines A-A.” That description seems clearly to contemplate the production of a number of containers in strip form before any severing takes place.
We are also in agreement with the board that whether the Hohl et al. patent is considered as disclosing a continuous strip of containers, there would be no invention in postponing the severing operation in the Waters patent until a strip of connected containers has been formed. The particular time at which the severing takes place involves nothing more than a matter of choice.
The sterilization of containers, when desired, also involves nothing more than the ordinary skill of the art. The Travis patent, discloses the application of sterilization to articles which are stored in a continuous strip of individual containers, and there would clearly be no invention, in view of that disclosure, in the sterilization of the containers formed by Waters.
'Claim 13 is similar to claim 14, but includes additional limitations that the containers are formed from a seamless tube and stored in rolled form.
We think it obviously a matter of choice whether seamed or seamless tubing is used in forming the containers. Extruded seamless tubing of heat-sealable material is old as shown by Lloyd, and it is apparent that such tubing could be readily substituted for the seamed tubing of Waters if desired.
Since the idea of storing connected containers in roll form is old in Wright, Ward, and Caulfield, it would clearly not be a matter of invention to store the connected containers of Waters in that manner prior to severing them.
While the appealed claims, include a number of features not shown in any single prior patent, at the same time every feature
The decision of the Board of Appeals is affirmed.
Jackson, Judge, retired, recalled to participate.
