Quality Park Window Security Envelope, Reveal-N-Seal, White, 4.125 x 9.5, 500 per Box, (67418)

I am fairly picky when it comes to any product but am convinced that this is the best choice for me as far as envelopes go. The self seal on these envelopes can not be reopened without ripping as soon as you seal it which is a nice touch because I have noticed the peel away stick type envelopes can be reopened at almost anytime with no rips or tears if you are smooth about it. The window is in the spot that I need it and the envelopes have security printing on the inside which is also a feature I wanted.The only drawback I have found to these envelopes is that they are fairly thin/light weight. Most bulk envelope packs share this attribute but not all. If you are accustomed to thicker envelopes you may want to look elsewhere but as far as I am concerned these are the perfect envelopes.

Work fine.

No see through quality paper, thick, although might means adding more weight to your mail, needing more stamps than usual. But overall a good package for a fair price.

I ordered these envelopes to use with QuickBooks check printing. They're completely awesome. They have nice weight, really good security masking, look professional, seal well, and if left in the box, dispense well too!I'll definitely order again.

Exactly what we needed and for a good price.

My attention was first caught by the patent number, US 6,732,494, printed inside the flap. I have been doing a lot of patent searching lately, so I immediately looked up the patent. You can also do this very easily. Go to Google Patents and enter the patent number.About the envelope: I have used similar envelopes with self-sealing adhesive in the past. I live in a very humid climate. We have had nearly sixty inches of rain in the last twelve months. The old lick and seal envelopes seal themselves and become unusable in a very short period of time.All of the press and seal envelopes that I have tried previously require that you peel off a strip before the adhesive is exposed. With the  Reveal-N-Seal Envelope , the adhesive is brought into position by folding up a pre-folded flap. This works very well. The adhesive is stronger than the paper of the envelope. As a result, attempts to reopen the envelope tear the paper. Altogether this is a well engineered product that I can give five stars to.Patent Analysis: US 6,732,494 is well written, with one exception, which I will explain. There are claims in the patent for the envelope, a method of manufacturing the envelope and a machine for manufacturing the envelope. The claims define the intellectual property. In order for a product to infringe on a patent, it has to have every element listed in the claim of the patent. Here is Claim 1 for the envelope."1. An envelope having:a front side and back side;a closing flap connected to the front side;a fold-back flap which can be folded from a stored state into a closed state, which in the stored state is folded against the envelope back side, and which in the closed state is bonded to the closing flap; andan adhesive closure including a contact adhesive coating,wherein in the stored state the contact adhesive coating is applied to a surface area of the envelope having separating characteristics and defining a separating area,wherein the contact adhesive coating, a surface of the contact adhesive area and the separating area are constructed so as to cooperate in such a way that the contact adhesive coating applied to the separating area is firmly bonded with its top onto the surface of the contact adhesive area of the envelope pressed onto the same,wherein the contact adhesive coating becomes separated in the closed state from the separating area, and the previous underside of the contact adhesive coating area now forms the surface of the contact adhesive coating having contact adhesive properties, andwherein on an edge of the envelope adjacent to an outer edge of the fold-back flap the contact adhesive has gripping recesses or a prebreak defining a gripping zone."My observation is that the Reveal-N-Seal Envelope does not have the gripping recesses in the adhesive area, shown as 27 in Fig. 3 of the specification. These are required in the claim, "contact adhesive has gripping recesses or a prebreak defining a gripping zone." I also do not see a "prebreak defining gripping zone." I am not sure that the arrows on the flap satisfy this requirement.Thus, I believe that the Reveal-N-Seal Envelope. which is without the gripping recesses, may not be protected by US 6,732,494. However, claim 2, the method of producing the envelope does not require gripping recesses. Anyone who followed the recipe of claim 2, would infringe on the patent. I am not a patent attorney, so this is only my observation, not a legal opinion.

My attention was first caught by the patent number, US 6,732,494, printed inside the flap. I have been doing a lot of patent searching lately, so I immediately looked up the patent. You can also do this very easily. Go to Google Patents and enter the patent number.About the envelope: I have used similar envelopes with self-sealing adhesive in the past. I live in a very humid climate. We have had nearly sixty inches of rain in the last twelve months. The old lick and seal envelopes seal themselves and become unusable in a very short period of time.All of the press and seal envelopes that I have tried previously require that you peel off a strip before the adhesive is exposed. With the  Reveal-N-Seal Envelope , the adhesive is brought into position by folding up a pre-folded flap. This works very well. The adhesive is stronger than the paper of the envelope. As a result, attempts to reopen the envelope tear the paper. Altogether this is a well engineered product that I can give five stars to.Patent Analysis: US 6,732,494 is well written, with one exception, which I will explain. There are claims in the patent for the envelope, a method of manufacturing the envelope and a machine for manufacturing the envelope. The claims define the intellectual property. In order for a product to infringe on a patent, it has to have every element listed in the claim of the patent. Here is Claim 1 for the envelope."1. An envelope having:a front side and back side;a closing flap connected to the front side;a fold-back flap which can be folded from a stored state into a closed state, which in the stored state is folded against the envelope back side, and which in the closed state is bonded to the closing flap; andan adhesive closure including a contact adhesive coating,wherein in the stored state the contact adhesive coating is applied to a surface area of the envelope having separating characteristics and defining a separating area,wherein the contact adhesive coating, a surface of the contact adhesive area and the separating area are constructed so as to cooperate in such a way that the contact adhesive coating applied to the separating area is firmly bonded with its top onto the surface of the contact adhesive area of the envelope pressed onto the same,wherein the contact adhesive coating becomes separated in the closed state from the separating area, and the previous underside of the contact adhesive coating area now forms the surface of the contact adhesive coating having contact adhesive properties, andwherein on an edge of the envelope adjacent to an outer edge of the fold-back flap the contact adhesive has gripping recesses or a prebreak defining a gripping zone."My observation is that the Reveal-N-Seal Envelope does not have the gripping recesses in the adhesive area, shown as 27 in Fig. 3 of the specification. These are required in the claim, "contact adhesive has gripping recesses or a prebreak defining a gripping zone." I also do not see a "prebreak defining gripping zone." I am not sure that the arrows on the flap satisfy this requirement.Thus, I believe that the Reveal-N-Seal Envelope. which is without the gripping recesses, may not be protected by US 6,732,494. However, claim 2, the method of producing the envelope does not require gripping recesses. Anyone who followed the recipe of claim 2, would infringe on the patent. I am not a patent attorney, so this is only my observation, not a legal opinion.